Question: how to put together a scuba regulator

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 Pick up the BCD by its handle or shoulder straps and make sure the cylinder is securely fastened and does not slip. Attaching The Regulator
The following procedures are for attaching a yoke style regulator to a "J" or "K" cylinder valve. Remove the dust cap by loosening the yoke screw. Place the 1st stage over the cylinder valve. The 1st stage's filter should be positioned against the valve's o-ring, and the 2nd stage hoses should be on the same side as the valve knob. Tighten the yoke screw against the valve. The screw should only be tightened finger-tight. Don't worry if the 1st stage rotates on the valve. It will tighten up when the air is opened. Attach the low-pressure hose to the power inflator's air inlet.

Assembling Your Scuba Gear

Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit

Pick up the BCD by its handle or shoulder straps and make sure the cylinder is securely fastened and does not slip. Attaching The Regulator
The following procedures are for attaching a yoke style regulator to a "J" or "K" cylinder valve. Remove the dust cap by loosening the yoke screw. Place the 1st stage over the cylinder valve. The 1st stage's filter should be positioned against the valve's o-ring, and the 2nd stage hoses should be on the same side as the valve knob. Tighten the yoke screw against the valve. The screw should only be tightened finger-tight. Don't worry if the 1st stage rotates on the valve. It will tighten up when the air is opened. Attach the low-pressure hose to the power inflator's air inlet.

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 Make sure the 2nd stages are placed on top of the BCD to prevent damage from the cylinder or a passing diver. Special care must be taken when placing a scuba unit on a beach because sand can cause your regulator or power inflator to malfunction. A towel or tarp underneath your equipment is very useful for this purpose. Secure the scuba units or lay them down after assembly. Disassembling Your Scuba Unit
You disassemble the scuba unit in the opposite order the gear was assembled. However, a couple steps are added to the process. Turn the valve knob clockwise until it's completely closed. Press the 2nd stage's purge button to release all the air pressure from the hoses. Remove the low-pressure hose from the power inflator. Remove the 1st stage from the cylinder valve.

Assembling Your Scuba Gear

Make sure the 2nd stages are placed on top of the BCD to prevent damage from the cylinder or a passing diver. Special care must be taken when placing a scuba unit on a beach because sand can cause your regulator or power inflator to malfunction. A towel or tarp underneath your equipment is very useful for this purpose. Secure the scuba units or lay them down after assembly. Disassembling Your Scuba Unit
You disassemble the scuba unit in the opposite order the gear was assembled. However, a couple steps are added to the process. Turn the valve knob clockwise until it's completely closed. Press the 2nd stage's purge button to release all the air pressure from the hoses. Remove the low-pressure hose from the power inflator. Remove the 1st stage from the cylinder valve.

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 Assembling Your Scuba Gear
Assembling Your Scuba Gear
Assembling your scuba gear requires special attention and care to prevent equipment problems during the dive. As a new diver it may seem like a complicated task, but with practice it will become as routine as any other skill. The basic procedure for assembling your gear is: Attach the cylinder to the BCD. Attach the regulator to the cylinder valve. Open the cylinder valve. Test the scuba unit. The sections that follow explain each step in detail. Attaching Your Tank to the BCD
If the cylinder is equipped with a yoke valve, inspect the valve's o-ring for signs of wear or cracks. Replace the o-ring if it's defective or missing.

Assembling Your Scuba Gear

Assembling Your Scuba Gear
Assembling Your Scuba Gear
Assembling your scuba gear requires special attention and care to prevent equipment problems during the dive. As a new diver it may seem like a complicated task, but with practice it will become as routine as any other skill. The basic procedure for assembling your gear is: Attach the cylinder to the BCD. Attach the regulator to the cylinder valve. Open the cylinder valve. Test the scuba unit. The sections that follow explain each step in detail. Attaching Your Tank to the BCD
If the cylinder is equipped with a yoke valve, inspect the valve's o-ring for signs of wear or cracks. Replace the o-ring if it's defective or missing.

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 However, a couple steps are added to the process. Turn the valve knob clockwise until it's completely closed. Press the 2nd stage's purge button to release all the air pressure from the hoses. Remove the low-pressure hose from the power inflator. Remove the 1st stage from the cylinder valve. Dry the dust cap with a towel, and tighten the dust cap in the 1st stage. Remove the cylinder from the BCD. After disassembling your gear, be sure to replace the 1st stage's dust cap. Hand Signals
Site Assessment

Assembling Your Scuba Gear

However, a couple steps are added to the process. Turn the valve knob clockwise until it's completely closed. Press the 2nd stage's purge button to release all the air pressure from the hoses. Remove the low-pressure hose from the power inflator. Remove the 1st stage from the cylinder valve. Dry the dust cap with a towel, and tighten the dust cap in the 1st stage. Remove the cylinder from the BCD. After disassembling your gear, be sure to replace the 1st stage's dust cap. Hand Signals
Site Assessment

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 Tighten the yoke screw against the valve. The screw should only be tightened finger-tight. Don't worry if the 1st stage rotates on the valve. It will tighten up when the air is opened. Attach the low-pressure hose to the power inflator's air inlet. If you have a DIN valve, the procedure is similar, with the exception that the 1st stage is screwed into the cylinder valve. Opening the Cylinder
Hold the submersible pressure gauge so that the face points towards the ground. An air leak inside the gauge could cause the gauge's cover to pop off, and holding the gauge face-down minimizes the risk of injury in the event this occurs. Slowly turn the valve knob counter-clockwise to open the valve. Continue to open the valve until it's completely open.

Assembling Your Scuba Gear

Tighten the yoke screw against the valve. The screw should only be tightened finger-tight. Don't worry if the 1st stage rotates on the valve. It will tighten up when the air is opened. Attach the low-pressure hose to the power inflator's air inlet. If you have a DIN valve, the procedure is similar, with the exception that the 1st stage is screwed into the cylinder valve. Opening the Cylinder
Hold the submersible pressure gauge so that the face points towards the ground. An air leak inside the gauge could cause the gauge's cover to pop off, and holding the gauge face-down minimizes the risk of injury in the event this occurs. Slowly turn the valve knob counter-clockwise to open the valve. Continue to open the valve until it's completely open.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 Newbie divers might find this a little tricky, but keep practicing and you’ll be bossing it in no time. First, the tank needs to be attached to your BCD (Buoyancy Control Device), using the straps at the back of the bcd. Next, connect the first stage of the scuba regulator to the cylinder valve of the oxygen tank. ( You can read more about the first stage in the next section!) This is achieved with the first stage of the scuba regulator, located at the end of the scuba octopus; where all four parts meet. To connect the regulator first stage to the oxygen tank: Remove tank valve cover. Unscrew the metal knob of the regulator first stage and remove the dust cover. As you do this, make sure the regulators second stage is on the right hand side of the bcd and the gauge is on the left hand side.

Scuba Octopus Setup - Diving Squad

Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:

Newbie divers might find this a little tricky, but keep practicing and you’ll be bossing it in no time. First, the tank needs to be attached to your BCD (Buoyancy Control Device), using the straps at the back of the bcd. Next, connect the first stage of the scuba regulator to the cylinder valve of the oxygen tank. ( You can read more about the first stage in the next section!) This is achieved with the first stage of the scuba regulator, located at the end of the scuba octopus; where all four parts meet. To connect the regulator first stage to the oxygen tank: Remove tank valve cover. Unscrew the metal knob of the regulator first stage and remove the dust cover. As you do this, make sure the regulators second stage is on the right hand side of the bcd and the gauge is on the left hand side.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 where all four parts meet. To connect the regulator first stage to the oxygen tank: Remove tank valve cover. Unscrew the metal knob of the regulator first stage and remove the dust cover. As you do this, make sure the regulators second stage is on the right hand side of the bcd and the gauge is on the left hand side. Attach the inflator hose of the scuba octopus to the intake valve of bcd. Then it’s just a matter of turning the cylinder valve on the air tank to open it and testing that both your regulators work by taking a couple of deep breaths through them and pressing the purge buttons. Also remember to press the inflate and deflate button on your bcd, to ensure that the intake valve has been attached correctly. If you’re uncertain about how to attach your regulator to the tank, be sure to get help from a dive professional. They will make sure that your dive gear and scuba kit is safe for use.

Scuba Octopus Setup - Diving Squad

where all four parts meet. To connect the regulator first stage to the oxygen tank: Remove tank valve cover. Unscrew the metal knob of the regulator first stage and remove the dust cover. As you do this, make sure the regulators second stage is on the right hand side of the bcd and the gauge is on the left hand side. Attach the inflator hose of the scuba octopus to the intake valve of bcd. Then it’s just a matter of turning the cylinder valve on the air tank to open it and testing that both your regulators work by taking a couple of deep breaths through them and pressing the purge buttons. Also remember to press the inflate and deflate button on your bcd, to ensure that the intake valve has been attached correctly. If you’re uncertain about how to attach your regulator to the tank, be sure to get help from a dive professional. They will make sure that your dive gear and scuba kit is safe for use.

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 If you have a DIN valve, the procedure is similar, with the exception that the 1st stage is screwed into the cylinder valve. Opening the Cylinder
Hold the submersible pressure gauge so that the face points towards the ground. An air leak inside the gauge could cause the gauge's cover to pop off, and holding the gauge face-down minimizes the risk of injury in the event this occurs. Slowly turn the valve knob counter-clockwise to open the valve. Continue to open the valve until it's completely open. Hold the face of the submersible pressure gauge against the cylinder or ground while opening the cylinder valve. Testing the Scuba Unit
Make sure the valve knob is opened. Listen carefully for air leaks near the valve or 1st stage. A hissing sound usually indicates a worn or cracked valve o-ring, which should be replaced before diving. Check the submersible pressure gauge to ensure the cylinder is full.

Assembling Your Scuba Gear

If you have a DIN valve, the procedure is similar, with the exception that the 1st stage is screwed into the cylinder valve. Opening the Cylinder
Hold the submersible pressure gauge so that the face points towards the ground. An air leak inside the gauge could cause the gauge's cover to pop off, and holding the gauge face-down minimizes the risk of injury in the event this occurs. Slowly turn the valve knob counter-clockwise to open the valve. Continue to open the valve until it's completely open. Hold the face of the submersible pressure gauge against the cylinder or ground while opening the cylinder valve. Testing the Scuba Unit
Make sure the valve knob is opened. Listen carefully for air leaks near the valve or 1st stage. A hissing sound usually indicates a worn or cracked valve o-ring, which should be replaced before diving. Check the submersible pressure gauge to ensure the cylinder is full.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 This comes with a Yoke Screw which tightens the regulator onto the tank. A Dust Cap is a small rubber cap which is positioned over the regulator first stage opening and tightened down using the yoke screw. This dust cap is crucial for preventing water from entering the regulator first stage body. Ports and Port Plugs are found all over the first stage body. These are where the different hoses are attached to. If the port is not in use, it will be covered by a port plug. There are often more ports than what is actually needed, so you can position the hoses in the way they like. Primary Second Stage
This is the part of the setup which the diver puts in their mouth and breathes from. This part is attached to the first stage by the LP hose. This part of the regulator works as the second phase of air pressure reduction, and transforms the air into a breathable ambient pressure.

Scuba Octopus Setup - Diving Squad

This comes with a Yoke Screw which tightens the regulator onto the tank. A Dust Cap is a small rubber cap which is positioned over the regulator first stage opening and tightened down using the yoke screw. This dust cap is crucial for preventing water from entering the regulator first stage body. Ports and Port Plugs are found all over the first stage body. These are where the different hoses are attached to. If the port is not in use, it will be covered by a port plug. There are often more ports than what is actually needed, so you can position the hoses in the way they like. Primary Second Stage
This is the part of the setup which the diver puts in their mouth and breathes from. This part is attached to the first stage by the LP hose. This part of the regulator works as the second phase of air pressure reduction, and transforms the air into a breathable ambient pressure.

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 Open the cylinder valve. Test the scuba unit. The sections that follow explain each step in detail. Attaching Your Tank to the BCD
If the cylinder is equipped with a yoke valve, inspect the valve's o-ring for signs of wear or cracks. Replace the o-ring if it's defective or missing. Stand the cylinder in an upright position with the valve knob positioned to your right side. The tank strap will stretch when wet, so soak the strap in water to prevent it from loosening during the dive. Lower the BCD's tank strap over the cylinder, and rotate the cylinder until the valve knob points to the BCD's right side. Make sure the strap is correctly woven through the buckle, and close the buckle. Tighten the strap if it's loose.

Assembling Your Scuba Gear

Open the cylinder valve. Test the scuba unit. The sections that follow explain each step in detail. Attaching Your Tank to the BCD
If the cylinder is equipped with a yoke valve, inspect the valve's o-ring for signs of wear or cracks. Replace the o-ring if it's defective or missing. Stand the cylinder in an upright position with the valve knob positioned to your right side. The tank strap will stretch when wet, so soak the strap in water to prevent it from loosening during the dive. Lower the BCD's tank strap over the cylinder, and rotate the cylinder until the valve knob points to the BCD's right side. Make sure the strap is correctly woven through the buckle, and close the buckle. Tighten the strap if it's loose.

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 Stand the cylinder in an upright position with the valve knob positioned to your right side. The tank strap will stretch when wet, so soak the strap in water to prevent it from loosening during the dive. Lower the BCD's tank strap over the cylinder, and rotate the cylinder until the valve knob points to the BCD's right side. Make sure the strap is correctly woven through the buckle, and close the buckle. Tighten the strap if it's loose. Pick up the BCD by its handle or shoulder straps and make sure the cylinder is securely fastened and does not slip. Attaching The Regulator
The following procedures are for attaching a yoke style regulator to a "J" or "K" cylinder valve. Remove the dust cap by loosening the yoke screw. Place the 1st stage over the cylinder valve. The 1st stage's filter should be positioned against the valve's o-ring, and the 2nd stage hoses should be on the same side as the valve knob.

Assembling Your Scuba Gear

Stand the cylinder in an upright position with the valve knob positioned to your right side. The tank strap will stretch when wet, so soak the strap in water to prevent it from loosening during the dive. Lower the BCD's tank strap over the cylinder, and rotate the cylinder until the valve knob points to the BCD's right side. Make sure the strap is correctly woven through the buckle, and close the buckle. Tighten the strap if it's loose. Pick up the BCD by its handle or shoulder straps and make sure the cylinder is securely fastened and does not slip. Attaching The Regulator
The following procedures are for attaching a yoke style regulator to a "J" or "K" cylinder valve. Remove the dust cap by loosening the yoke screw. Place the 1st stage over the cylinder valve. The 1st stage's filter should be positioned against the valve's o-ring, and the 2nd stage hoses should be on the same side as the valve knob.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 Delivers pressurised oxygen to your mouth via the oxygen tank. Spare Diving Regulator: For sharing oxygen with a buddy in emergencies. Scuba Diving Console: Contains gauges that give readings of your current depth and how much oxygen you have left. Sometimes there’s a compass to! Inflator Hose: Attaches to your BCD, allowing you to inflate or deflate it via air transferred from the oxygen tank. So a scuba octopus is the connected setup of two regulators, a dive gauge and an inflator hose. However, it’s not uncommon to hear this being described as the scuba regulator setup – even when there’s more to it than just a regulator!

Scuba Octopus Setup - Diving Squad

Delivers pressurised oxygen to your mouth via the oxygen tank. Spare Diving Regulator: For sharing oxygen with a buddy in emergencies. Scuba Diving Console: Contains gauges that give readings of your current depth and how much oxygen you have left. Sometimes there’s a compass to! Inflator Hose: Attaches to your BCD, allowing you to inflate or deflate it via air transferred from the oxygen tank. So a scuba octopus is the connected setup of two regulators, a dive gauge and an inflator hose. However, it’s not uncommon to hear this being described as the scuba regulator setup – even when there’s more to it than just a regulator!

Assembling Your Scuba Gear Assembling Your Scuba Gear
Assembling Your Scuba Gear
Attaching Your Tank to the BCD
Attaching The Regulator
Opening the Cylinder
Testing the Scuba Unit
Stowing the Scuba Unit
Disassembling Your Scuba Unit
 Test the power inflator to make sure it inflates and deflates. Over-inflate the BCD to ensure the over-pressure relief valves vent the excess pressure
Stowing the Scuba Unit
The scuba unit should be secured or stored to prevent damage to the gear or injury to a diver. Most dive boats have devices that secure the cylinder in an upright position. The boat's divemaster will show you the proper way to use their system. If a securing device is not available, lay the unit down with the cylinder at the bottom of the unit. Make sure the 2nd stages are placed on top of the BCD to prevent damage from the cylinder or a passing diver. Special care must be taken when placing a scuba unit on a beach because sand can cause your regulator or power inflator to malfunction. A towel or tarp underneath your equipment is very useful for this purpose. Secure the scuba units or lay them down after assembly. Disassembling Your Scuba Unit
You disassemble the scuba unit in the opposite order the gear was assembled.

Assembling Your Scuba Gear

Test the power inflator to make sure it inflates and deflates. Over-inflate the BCD to ensure the over-pressure relief valves vent the excess pressure
Stowing the Scuba Unit
The scuba unit should be secured or stored to prevent damage to the gear or injury to a diver. Most dive boats have devices that secure the cylinder in an upright position. The boat's divemaster will show you the proper way to use their system. If a securing device is not available, lay the unit down with the cylinder at the bottom of the unit. Make sure the 2nd stages are placed on top of the BCD to prevent damage from the cylinder or a passing diver. Special care must be taken when placing a scuba unit on a beach because sand can cause your regulator or power inflator to malfunction. A towel or tarp underneath your equipment is very useful for this purpose. Secure the scuba units or lay them down after assembly. Disassembling Your Scuba Unit
You disassemble the scuba unit in the opposite order the gear was assembled.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 #3 Scuba Regulator Parts
First Stage
All of the mechanisms which lower the air pressure to an intermediate pressure are housed in the first stage body. This is a metal cylinder through which the air enters, the pressure is reduced, and then leaves to go through the second stage. This could also be considered the “end of the octopus” as it’s where the 2 regulators, dive gauge and pressure hose all come together. First Stage Parts: A Yoke or DIN fitting then attaches the first stage body to the scuba tank. This comes with a Yoke Screw which tightens the regulator onto the tank. A Dust Cap is a small rubber cap which is positioned over the regulator first stage opening and tightened down using the yoke screw. This dust cap is crucial for preventing water from entering the regulator first stage body. Ports and Port Plugs are found all over the first stage body. These are where the different hoses are attached to.

Scuba Octopus Setup - Diving Squad

#3 Scuba Regulator Parts
First Stage
All of the mechanisms which lower the air pressure to an intermediate pressure are housed in the first stage body. This is a metal cylinder through which the air enters, the pressure is reduced, and then leaves to go through the second stage. This could also be considered the “end of the octopus” as it’s where the 2 regulators, dive gauge and pressure hose all come together. First Stage Parts: A Yoke or DIN fitting then attaches the first stage body to the scuba tank. This comes with a Yoke Screw which tightens the regulator onto the tank. A Dust Cap is a small rubber cap which is positioned over the regulator first stage opening and tightened down using the yoke screw. This dust cap is crucial for preventing water from entering the regulator first stage body. Ports and Port Plugs are found all over the first stage body. These are where the different hoses are attached to.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 If the port is not in use, it will be covered by a port plug. There are often more ports than what is actually needed, so you can position the hoses in the way they like. Primary Second Stage
This is the part of the setup which the diver puts in their mouth and breathes from. This part is attached to the first stage by the LP hose. This part of the regulator works as the second phase of air pressure reduction, and transforms the air into a breathable ambient pressure. The purge button is found on the face of the regulators second stage. This button allows the second stage to flood with air, forcing any water out of the second stage. The ease of breathing adjustment is found on most regulators, and it allows divers to adjust their breathing resistance through a knob or lever. This adjustment helps to avoid free flow, which is when the air flows continuously out of the second stage regardless of the diver’s breath. An exhaust valve is located on the second stage and works to channel any exhaled air bubbles away from the divers face.

Scuba Octopus Setup - Diving Squad

If the port is not in use, it will be covered by a port plug. There are often more ports than what is actually needed, so you can position the hoses in the way they like. Primary Second Stage
This is the part of the setup which the diver puts in their mouth and breathes from. This part is attached to the first stage by the LP hose. This part of the regulator works as the second phase of air pressure reduction, and transforms the air into a breathable ambient pressure. The purge button is found on the face of the regulators second stage. This button allows the second stage to flood with air, forcing any water out of the second stage. The ease of breathing adjustment is found on most regulators, and it allows divers to adjust their breathing resistance through a knob or lever. This adjustment helps to avoid free flow, which is when the air flows continuously out of the second stage regardless of the diver’s breath. An exhaust valve is located on the second stage and works to channel any exhaled air bubbles away from the divers face.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 Sometimes there’s a compass to! Inflator Hose: Attaches to your BCD, allowing you to inflate or deflate it via air transferred from the oxygen tank. So a scuba octopus is the connected setup of two regulators, a dive gauge and an inflator hose. However, it’s not uncommon to hear this being described as the scuba regulator setup – even when there’s more to it than just a regulator! Whatever you want to call it, you need to make sure that your setup is right as it controls whether you’re able to breathe underwater or not – pretty much the defining feature of scuba diving! ^ Not that kind of octopus! Index: Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work? Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
Once you have your scuba octopus ready, you’ll want to safely and securely attach it to your scuba / oxygen tank.

Scuba Octopus Setup - Diving Squad

Sometimes there’s a compass to! Inflator Hose: Attaches to your BCD, allowing you to inflate or deflate it via air transferred from the oxygen tank. So a scuba octopus is the connected setup of two regulators, a dive gauge and an inflator hose. However, it’s not uncommon to hear this being described as the scuba regulator setup – even when there’s more to it than just a regulator! Whatever you want to call it, you need to make sure that your setup is right as it controls whether you’re able to breathe underwater or not – pretty much the defining feature of scuba diving! ^ Not that kind of octopus! Index: Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work? Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
Once you have your scuba octopus ready, you’ll want to safely and securely attach it to your scuba / oxygen tank.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 Attach the inflator hose of the scuba octopus to the intake valve of bcd. Then it’s just a matter of turning the cylinder valve on the air tank to open it and testing that both your regulators work by taking a couple of deep breaths through them and pressing the purge buttons. Also remember to press the inflate and deflate button on your bcd, to ensure that the intake valve has been attached correctly. If you’re uncertain about how to attach your regulator to the tank, be sure to get help from a dive professional. They will make sure that your dive gear and scuba kit is safe for use. #2 Scuba Regulator Setup Diagram
The scuba regulator/octopus setup is generally made up of five basic parts. These parts are all connected together with hoses, and work together to allow you to breathe. Let’s take a closer look: Photo Credit: Natilie L Gibb @ www.thoughtco.com
"Let's take a closer look"!

Scuba Octopus Setup - Diving Squad

Attach the inflator hose of the scuba octopus to the intake valve of bcd. Then it’s just a matter of turning the cylinder valve on the air tank to open it and testing that both your regulators work by taking a couple of deep breaths through them and pressing the purge buttons. Also remember to press the inflate and deflate button on your bcd, to ensure that the intake valve has been attached correctly. If you’re uncertain about how to attach your regulator to the tank, be sure to get help from a dive professional. They will make sure that your dive gear and scuba kit is safe for use. #2 Scuba Regulator Setup Diagram
The scuba regulator/octopus setup is generally made up of five basic parts. These parts are all connected together with hoses, and work together to allow you to breathe. Let’s take a closer look: Photo Credit: Natilie L Gibb @ www.thoughtco.com
"Let's take a closer look"!

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 The purge button is found on the face of the regulators second stage. This button allows the second stage to flood with air, forcing any water out of the second stage. The ease of breathing adjustment is found on most regulators, and it allows divers to adjust their breathing resistance through a knob or lever. This adjustment helps to avoid free flow, which is when the air flows continuously out of the second stage regardless of the diver’s breath. An exhaust valve is located on the second stage and works to channel any exhaled air bubbles away from the divers face. This is found below the mouthpiece and helps you to keep a clear vision. Then there is the mouthpiece. This is the part that the diver puts their mouth on to access air. Alternate Second Stage
This part of the scuba octopus setup, also called a buddy regulator or an alternate air source, is basically the same thing as the primary second stage. It does the same job through the same process as the primary second stage, however, it is used as a backup.

Scuba Octopus Setup - Diving Squad

The purge button is found on the face of the regulators second stage. This button allows the second stage to flood with air, forcing any water out of the second stage. The ease of breathing adjustment is found on most regulators, and it allows divers to adjust their breathing resistance through a knob or lever. This adjustment helps to avoid free flow, which is when the air flows continuously out of the second stage regardless of the diver’s breath. An exhaust valve is located on the second stage and works to channel any exhaled air bubbles away from the divers face. This is found below the mouthpiece and helps you to keep a clear vision. Then there is the mouthpiece. This is the part that the diver puts their mouth on to access air. Alternate Second Stage
This part of the scuba octopus setup, also called a buddy regulator or an alternate air source, is basically the same thing as the primary second stage. It does the same job through the same process as the primary second stage, however, it is used as a backup.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 In the case of emergency, such as a fellow diver running out of air, the alternate second stage can be used to allow them to share from your air tank. This part is also attached to the first stage with a LP regulator hose. This part of the scuba octopus setup works exactly the same way as the primary second stage. While it consists of the same parts, it is connected by a low pressure hose. An LP hose transports the intermediate air from the first to the second stage. An alternate second stage LP hose is usually longer for ease of use by another diver if needed. Console with Submersible Pressure Gauge
The Submersible Pressure Gauge (SPG) allows the diver to check how much air they have left in their tank to make sure they don’t just run out of air underwater. A high pressure (HP) hose connects this pressure gauge to the first stage in the regulator. This hose sends HP air directly from the tank to the gauge. The gauge console also houses other useful gauges, such as a dive computer, depth gauge or compass.

Scuba Octopus Setup - Diving Squad

In the case of emergency, such as a fellow diver running out of air, the alternate second stage can be used to allow them to share from your air tank. This part is also attached to the first stage with a LP regulator hose. This part of the scuba octopus setup works exactly the same way as the primary second stage. While it consists of the same parts, it is connected by a low pressure hose. An LP hose transports the intermediate air from the first to the second stage. An alternate second stage LP hose is usually longer for ease of use by another diver if needed. Console with Submersible Pressure Gauge
The Submersible Pressure Gauge (SPG) allows the diver to check how much air they have left in their tank to make sure they don’t just run out of air underwater. A high pressure (HP) hose connects this pressure gauge to the first stage in the regulator. This hose sends HP air directly from the tank to the gauge. The gauge console also houses other useful gauges, such as a dive computer, depth gauge or compass.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 This is found below the mouthpiece and helps you to keep a clear vision. Then there is the mouthpiece. This is the part that the diver puts their mouth on to access air. Alternate Second Stage
This part of the scuba octopus setup, also called a buddy regulator or an alternate air source, is basically the same thing as the primary second stage. It does the same job through the same process as the primary second stage, however, it is used as a backup. In the case of emergency, such as a fellow diver running out of air, the alternate second stage can be used to allow them to share from your air tank. This part is also attached to the first stage with a LP regulator hose. This part of the scuba octopus setup works exactly the same way as the primary second stage. While it consists of the same parts, it is connected by a low pressure hose. An LP hose transports the intermediate air from the first to the second stage.

Scuba Octopus Setup - Diving Squad

This is found below the mouthpiece and helps you to keep a clear vision. Then there is the mouthpiece. This is the part that the diver puts their mouth on to access air. Alternate Second Stage
This part of the scuba octopus setup, also called a buddy regulator or an alternate air source, is basically the same thing as the primary second stage. It does the same job through the same process as the primary second stage, however, it is used as a backup. In the case of emergency, such as a fellow diver running out of air, the alternate second stage can be used to allow them to share from your air tank. This part is also attached to the first stage with a LP regulator hose. This part of the scuba octopus setup works exactly the same way as the primary second stage. While it consists of the same parts, it is connected by a low pressure hose. An LP hose transports the intermediate air from the first to the second stage.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 Whatever you want to call it, you need to make sure that your setup is right as it controls whether you’re able to breathe underwater or not – pretty much the defining feature of scuba diving! ^ Not that kind of octopus! Index: Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work? Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
Once you have your scuba octopus ready, you’ll want to safely and securely attach it to your scuba / oxygen tank. Newbie divers might find this a little tricky, but keep practicing and you’ll be bossing it in no time. First, the tank needs to be attached to your BCD (Buoyancy Control Device), using the straps at the back of the bcd. Next, connect the first stage of the scuba regulator to the cylinder valve of the oxygen tank. ( You can read more about the first stage in the next section!) This is achieved with the first stage of the scuba regulator, located at the end of the scuba octopus;

Scuba Octopus Setup - Diving Squad

Whatever you want to call it, you need to make sure that your setup is right as it controls whether you’re able to breathe underwater or not – pretty much the defining feature of scuba diving! ^ Not that kind of octopus! Index: Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work? Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
Once you have your scuba octopus ready, you’ll want to safely and securely attach it to your scuba / oxygen tank. Newbie divers might find this a little tricky, but keep practicing and you’ll be bossing it in no time. First, the tank needs to be attached to your BCD (Buoyancy Control Device), using the straps at the back of the bcd. Next, connect the first stage of the scuba regulator to the cylinder valve of the oxygen tank. ( You can read more about the first stage in the next section!) This is achieved with the first stage of the scuba regulator, located at the end of the scuba octopus;

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 An alternate second stage LP hose is usually longer for ease of use by another diver if needed. Console with Submersible Pressure Gauge
The Submersible Pressure Gauge (SPG) allows the diver to check how much air they have left in their tank to make sure they don’t just run out of air underwater. A high pressure (HP) hose connects this pressure gauge to the first stage in the regulator. This hose sends HP air directly from the tank to the gauge. The gauge console also houses other useful gauges, such as a dive computer, depth gauge or compass. Low Pressure Inflator Hose
The buoyancy compensator (BC) inflator is fed intermediate pressure air from the regulator first stage through this LP inflator hose. This gives the diver the opportunity to add air to their BC directly from tank when they want to. Where the low-pressure inflator hose attaches to the buoyancy compensator inflation mechanism, a sleeve is used. This metallic sleeve needs to be held back when connecting the hose to the BC inflator. They are usually textured for easier grip in the water.

Scuba Octopus Setup - Diving Squad

An alternate second stage LP hose is usually longer for ease of use by another diver if needed. Console with Submersible Pressure Gauge
The Submersible Pressure Gauge (SPG) allows the diver to check how much air they have left in their tank to make sure they don’t just run out of air underwater. A high pressure (HP) hose connects this pressure gauge to the first stage in the regulator. This hose sends HP air directly from the tank to the gauge. The gauge console also houses other useful gauges, such as a dive computer, depth gauge or compass. Low Pressure Inflator Hose
The buoyancy compensator (BC) inflator is fed intermediate pressure air from the regulator first stage through this LP inflator hose. This gives the diver the opportunity to add air to their BC directly from tank when they want to. Where the low-pressure inflator hose attaches to the buoyancy compensator inflation mechanism, a sleeve is used. This metallic sleeve needs to be held back when connecting the hose to the BC inflator. They are usually textured for easier grip in the water.

How Scuba Works | HowStuffWorks How Scuba Works
How Scuba Works
Wet Suits, Dry Suits, and Buoyancy Control
Scuba Breathing Apparatus
Diving Physics, Physiology and Hazards
Effects of Scuba Diving on the Body
Scuba: Additional Equipment
Scuba Training
Amateur levels
 The process repeats when you inhale again. Operation of a regulator's first stage
The first stage usually has several ports with hoses that lead to the second stage as well as to other devices, such as an additional second stage, tank-pressure gauge and/or buoyancy control device (BCD -- more on this later). Inside a regulator's second stage
The regulator's second stage consists of: Plastic chamber with an outer rubber diaphragm that is in contact with ambient water pressure
Purge button
Inner valve that is connected to a movable lever
Exhaust valve
Mouthpiece
The second stage is connected by a hose to the intermediate-pressure chamber of the first stage. This is how the second stage operates: You inhale, thereby lowering the pressure within the second stage to below the ambient water pressure. The water pressure presses in on the diaphragm membrane and moves the lever. The lever's movement opens the inlet valve. This allows air to flow into the second stage from the first stage, and into your lungs through the mouthpiece. When you exhale, the pressure in the second stage exceeds the ambient water pressure and pushes out on the membrane.

How Scuba Works | HowStuffWorks

How Scuba Works
How Scuba Works
Wet Suits, Dry Suits, and Buoyancy Control
Scuba Breathing Apparatus
Diving Physics, Physiology and Hazards
Effects of Scuba Diving on the Body
Scuba: Additional Equipment
Scuba Training
Amateur levels

The process repeats when you inhale again. Operation of a regulator's first stage
The first stage usually has several ports with hoses that lead to the second stage as well as to other devices, such as an additional second stage, tank-pressure gauge and/or buoyancy control device (BCD -- more on this later). Inside a regulator's second stage
The regulator's second stage consists of: Plastic chamber with an outer rubber diaphragm that is in contact with ambient water pressure
Purge button
Inner valve that is connected to a movable lever
Exhaust valve
Mouthpiece
The second stage is connected by a hose to the intermediate-pressure chamber of the first stage. This is how the second stage operates: You inhale, thereby lowering the pressure within the second stage to below the ambient water pressure. The water pressure presses in on the diaphragm membrane and moves the lever. The lever's movement opens the inlet valve. This allows air to flow into the second stage from the first stage, and into your lungs through the mouthpiece. When you exhale, the pressure in the second stage exceeds the ambient water pressure and pushes out on the membrane.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 #2 Scuba Regulator Setup Diagram
The scuba regulator/octopus setup is generally made up of five basic parts. These parts are all connected together with hoses, and work together to allow you to breathe. Let’s take a closer look: Photo Credit: Natilie L Gibb @ www.thoughtco.com
"Let's take a closer look"! #3 Scuba Regulator Parts
First Stage
All of the mechanisms which lower the air pressure to an intermediate pressure are housed in the first stage body. This is a metal cylinder through which the air enters, the pressure is reduced, and then leaves to go through the second stage. This could also be considered the “end of the octopus” as it’s where the 2 regulators, dive gauge and pressure hose all come together. First Stage Parts: A Yoke or DIN fitting then attaches the first stage body to the scuba tank.

Scuba Octopus Setup - Diving Squad

#2 Scuba Regulator Setup Diagram
The scuba regulator/octopus setup is generally made up of five basic parts. These parts are all connected together with hoses, and work together to allow you to breathe. Let’s take a closer look: Photo Credit: Natilie L Gibb @ www.thoughtco.com
"Let's take a closer look"! #3 Scuba Regulator Parts
First Stage
All of the mechanisms which lower the air pressure to an intermediate pressure are housed in the first stage body. This is a metal cylinder through which the air enters, the pressure is reduced, and then leaves to go through the second stage. This could also be considered the “end of the octopus” as it’s where the 2 regulators, dive gauge and pressure hose all come together. First Stage Parts: A Yoke or DIN fitting then attaches the first stage body to the scuba tank.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 Since the ambient pressure changes as a diver changes depth, scuba diving regulators must adjust the air delivered to ambient pressure as a diver ascends and descends. How Regulators Work
Scuba regulators reduce tank pressure in two steps. The first step of pressure reduction is from tank pressure to intermediate pressure, and the second step of pressure reduction is from intermediate pressure to ambient pressure. The Regulator First Stage: The first stage reduces air at tank pressure to intermediate pressure and releases the intermediate pressure air into a hose which feeds into the regulator's second stage. The way the regulator first stage reduces tank pressure is ingenious. A first stage consists of two air chambers separated by a valve. When the regulator is not pressurized this valve is open. When connected to a tank, air from the scuba tank flows into the first chamber, through the valve, and into the second chamber. The valve between the two chambers stays open until the air in the second chamber reaches intermediate pressure.

Scuba Diving Regulators (First and Second Stages)

How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:

Since the ambient pressure changes as a diver changes depth, scuba diving regulators must adjust the air delivered to ambient pressure as a diver ascends and descends. How Regulators Work
Scuba regulators reduce tank pressure in two steps. The first step of pressure reduction is from tank pressure to intermediate pressure, and the second step of pressure reduction is from intermediate pressure to ambient pressure. The Regulator First Stage: The first stage reduces air at tank pressure to intermediate pressure and releases the intermediate pressure air into a hose which feeds into the regulator's second stage. The way the regulator first stage reduces tank pressure is ingenious. A first stage consists of two air chambers separated by a valve. When the regulator is not pressurized this valve is open. When connected to a tank, air from the scuba tank flows into the first chamber, through the valve, and into the second chamber. The valve between the two chambers stays open until the air in the second chamber reaches intermediate pressure.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 The way the regulator first stage reduces tank pressure is ingenious. A first stage consists of two air chambers separated by a valve. When the regulator is not pressurized this valve is open. When connected to a tank, air from the scuba tank flows into the first chamber, through the valve, and into the second chamber. The valve between the two chambers stays open until the air in the second chamber reaches intermediate pressure. Once the air in the second chamber reaches intermediate pressure, the valve between the two chambers closes, preventing the high-pressure air from the tank from flowing into the second chamber. When a diver inhales, air from the second chamber is released to the second stage. As the air in the second chamber is released, the pressure in the second chamber drops, allowing the valve between the two chambers to open. Air flows from the first chamber into the second chamber until the pressure in the second chamber rises to an intermediate pressure and once again forces the valve between the two chambers closed. The Regulator Second Stage:

The way the regulator first stage reduces tank pressure is ingenious. A first stage consists of two air chambers separated by a valve. When the regulator is not pressurized this valve is open. When connected to a tank, air from the scuba tank flows into the first chamber, through the valve, and into the second chamber. The valve between the two chambers stays open until the air in the second chamber reaches intermediate pressure. Once the air in the second chamber reaches intermediate pressure, the valve between the two chambers closes, preventing the high-pressure air from the tank from flowing into the second chamber. When a diver inhales, air from the second chamber is released to the second stage. As the air in the second chamber is released, the pressure in the second chamber drops, allowing the valve between the two chambers to open. Air flows from the first chamber into the second chamber until the pressure in the second chamber rises to an intermediate pressure and once again forces the valve between the two chambers closed. The Regulator Second Stage:

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 3. Yoke Screw
The regulator's yoke is equipped with a yoke screw-- a metal screw that runs through the regulator yoke and tightens the regulator first stage body onto the tank. To tighten the yoke screw, the diver turns the black, plastic handle attached to the screw. 4. Dust Cap
It is extremely important that no water enters the regulator first stage body. When the first stage body is tightened onto a tank, it creates a water-tight seal to the tank valve. However, when the first stage body is disconnected from the tank, it is possible for water to enter the opening in the first stage, through which air passes from the tank to the regulator. The dust cap is a rubber cap that can be placed over the regulator first stage opening and tightened down using the regulator yoke screw. This seals closed the opening on the first stage. 5.

Description of Scuba Diving Regulator Parts

The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving

3. Yoke Screw
The regulator's yoke is equipped with a yoke screw-- a metal screw that runs through the regulator yoke and tightens the regulator first stage body onto the tank. To tighten the yoke screw, the diver turns the black, plastic handle attached to the screw. 4. Dust Cap
It is extremely important that no water enters the regulator first stage body. When the first stage body is tightened onto a tank, it creates a water-tight seal to the tank valve. However, when the first stage body is disconnected from the tank, it is possible for water to enter the opening in the first stage, through which air passes from the tank to the regulator. The dust cap is a rubber cap that can be placed over the regulator first stage opening and tightened down using the regulator yoke screw. This seals closed the opening on the first stage. 5.

How a Scuba Diving Regulator Works - AquaViews - Leisure Pro How a Scuba Diving Regulator Works
How a Scuba Diving Regulator Works
What is a Scuba Diving Regulator?
How Does a Scuba Regulator Work?
Parts of a Scuba Diving Regulator
First Stage Regulator
Second Stage Regulator
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 Divers then rely on scuba regulators to decrease the stored high-pressure air to a much safer pressure level every time they inhale through the connected mouthpiece. Parts of a Scuba Diving Regulator
Scuba regulators do the critical job of delivering breathable air from pressurized air tanks to divers by working in two stages: First Stage Regulator
As mentioned above, air is compressed and stored in the tank under high pressure, usually about 3,000 pounds per square inch (psi). In order to reduce this pressure, the regulator first stage, which attaches to the tank valve, lowers the tank pressure to intermediate pressure (about 140psi) for release into a hose that leads to the regulator’s second stage. The valve in the first stage opens to let some air into the hose and then closes again. The exact process, of course, also depends on your scuba tank’s valve type. The regulator also compensates for the decreased pressure in the tank as the air is used and as the diver changes depth, which changes the ambient water pressure. Second Stage Regulator
The second stage of a scuba regulator is the part that goes into your mouth. It contains a mechanism that further reduces the intermediate pressure in the hose coming from the first stage to the surrounding water pressure, making it comfortable and easy to breathe. As with the first stage, the second stage also contains a piston or diaphragm construction which starts and stops the airflow.

How a Scuba Diving Regulator Works - AquaViews - Leisure Pro

How a Scuba Diving Regulator Works
How a Scuba Diving Regulator Works
What is a Scuba Diving Regulator?
How Does a Scuba Regulator Work?
Parts of a Scuba Diving Regulator
First Stage Regulator
Second Stage Regulator
Leisure Pro's AquaViews Newsletter

The best scuba regulator - Chicago Tribune The best scuba regulator
The best scuba regulator
How scuba regulators work
Considerations when choosing scuba regulators
Price
FAQ
Q. Do I need to buy first- and second-stage regulators from the same company?
Q. Do my regulators need regular maintenance?
Scuba regulators we recommend
 The best scuba regulator - Chicago Tribune
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What to buy
The best scuba regulator
By Bob Beacham
BestReviews |
Dec 12, 2020 at 8:34 AM
The first SCUBA (self-contained underwater breathing apparatus) was developed in the early 1940s by French divers Emile Gagnan and Jacques Cousteau (the latter went on to become a famous conservationist and filmmaker). It was patented in 1945 and called the Aqua Lung. ( BestReviews)
A good scuba regulator is a vital part of any dive gear, reducing the high pressure combination of helium, nitrogen, and oxygen in the tanks so it’s breathable by the diver. Not all regulators are the same, however, so we’ve put together a concise buyer’s guide to help those new to the sport decide which is best. We’ve also made a few recommendations at the end of this article. Our top pick is the outstanding Scubapro MK25 EVO/A700 Diving Regulator System, a combination that provides safety and easy breathing for experienced divers wherever they go and whatever conditions they encounter. How scuba regulators work
Scuba regulators are divided into first stage — which takes tank pressure down from a couple thousand pounds per square inch (psi) to around 140 psi — and second stage, the mouthpiece, which offers fine pressure adjustment for comfortable breathing. You may also have an octopus, or a standby second regulator for emergencies. Advertisement
The first-stage regulator is more complex. They are either diaphragm or piston operated.

The best scuba regulator - Chicago Tribune

The best scuba regulator
The best scuba regulator
How scuba regulators work
Considerations when choosing scuba regulators
Price
FAQ
Q. Do I need to buy first- and second-stage regulators from the same company?
Q. Do my regulators need regular maintenance?
Scuba regulators we recommend

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 1. First Stage Body
This metal cylinder contains the mechanisms that reduce the high-pressure air in the scuba tank to an intermediate pressure. High-pressure air flows in one side of the first stage body; undergoes pressure reduction; then flows out through the low-pressure hoses. 2. Yoke
The regulator first stage body is held against the scuba tank's valve through one of two methods: a yoke or a DIN fitting. This diagram illustrates a yoke fitting, also called an international fitting. The “yoke” is the metal oval that fits over the tank valve to hold the regulator in place.

1. First Stage Body
This metal cylinder contains the mechanisms that reduce the high-pressure air in the scuba tank to an intermediate pressure. High-pressure air flows in one side of the first stage body; undergoes pressure reduction; then flows out through the low-pressure hoses. 2. Yoke
The regulator first stage body is held against the scuba tank's valve through one of two methods: a yoke or a DIN fitting. This diagram illustrates a yoke fitting, also called an international fitting. The “yoke” is the metal oval that fits over the tank valve to hold the regulator in place.

Regulator Features - The Scuba Doctor Regulator Features
Regulator Features
Advice on choosing the right scuba regulator for you.
General Scuba Regulator Guidelines
Free Assembly
Scuba Regulator Choices
DIN vs Yoke (A-Clamp) Regulators
Balanced/Unbalanced Regulators
Cold Water Kit
Piston vs Diaphragm Regulators
Overbalanced Regulators
Scuba Regulator Ports
Nitrox Compatible Regulators
Compact Second Stage Regulators
Side Vented Second Stage Regulators
 When purchasing your regulator you will need to buy the three major parts – the 1st and 2nd stage (regulator set), the alternate air source (octopus) and the instruments. As with most purchases, going for major brand names assures a certain level of quality and even though many of us like a bargain, with scuba equipment, the more you spend the better the equipment you get. So, if you thought your regulator would include an octopus and gauges, take your regulator budget and deduct between 30% to 40% to allow for the basic instruments you will need. Whatever is left is what you can afford for your regulator. You should always use the same brand of 1st and 2nd stages, plus the octopus you choose should also be from the same manufacturer as your first stage regulator to ensure the intermediate pressures are compatible. Gauges need not be made by the same manufacturer, but you should always go for major instrument brands because their accuracy and reliability are much higher than imitations. Free Assembly
When you have made your choice and ordered your equipment from The Scuba Doctor, we will assemble and test the regulator, octopus, gauges and any hoses, prior to dispatch or collection to ensure they are functioning correctly (unless you request us to do otherwise). Scuba Regulator Choices
There are several types of regulator, piston or diaphragm and balanced and unbalanced systems. DIN vs Yoke (A-Clamp) Regulators
The most common coupling in use in Australia is still the International Yoke or A-Clamp fitting (same thing, different names!). Yoke fittings were the recreational diving worldwide standard, but technical divers switched to DIN a long time ago because it's a safer system.

Regulator Features - The Scuba Doctor

Regulator Features
Regulator Features
Advice on choosing the right scuba regulator for you.
General Scuba Regulator Guidelines
Free Assembly
Scuba Regulator Choices
DIN vs Yoke (A-Clamp) Regulators
Balanced/Unbalanced Regulators
Cold Water Kit
Piston vs Diaphragm Regulators
Overbalanced Regulators
Scuba Regulator Ports
Nitrox Compatible Regulators
Compact Second Stage Regulators
Side Vented Second Stage Regulators

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 2. Yoke
The regulator first stage body is held against the scuba tank's valve through one of two methods: a yoke or a DIN fitting. This diagram illustrates a yoke fitting, also called an international fitting. The “yoke” is the metal oval that fits over the tank valve to hold the regulator in place. 3. Yoke Screw
The regulator's yoke is equipped with a yoke screw-- a metal screw that runs through the regulator yoke and tightens the regulator first stage body onto the tank. To tighten the yoke screw, the diver turns the black, plastic handle attached to the screw. 4. Dust Cap
It is extremely important that no water enters the regulator first stage body.

2. Yoke
The regulator first stage body is held against the scuba tank's valve through one of two methods: a yoke or a DIN fitting. This diagram illustrates a yoke fitting, also called an international fitting. The “yoke” is the metal oval that fits over the tank valve to hold the regulator in place. 3. Yoke Screw
The regulator's yoke is equipped with a yoke screw-- a metal screw that runs through the regulator yoke and tightens the regulator first stage body onto the tank. To tighten the yoke screw, the diver turns the black, plastic handle attached to the screw. 4. Dust Cap
It is extremely important that no water enters the regulator first stage body.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 Low Pressure Inflator Hose
The buoyancy compensator (BC) inflator is fed intermediate pressure air from the regulator first stage through this LP inflator hose. This gives the diver the opportunity to add air to their BC directly from tank when they want to. Where the low-pressure inflator hose attaches to the buoyancy compensator inflation mechanism, a sleeve is used. This metallic sleeve needs to be held back when connecting the hose to the BC inflator. They are usually textured for easier grip in the water. The attachment opening connects the BC inflator to the LP hose. These come in a variety of sizes. "Still reading about my evil cyborg twin? Good job"! #4 Different Types of Scuba Regulator & Buyer's Guide
When the proud day arrives that you’re finally ready to invest in your own scuba regulator there’s two things you ought to do, to ensure you get the best model for you.

Scuba Octopus Setup - Diving Squad

Low Pressure Inflator Hose
The buoyancy compensator (BC) inflator is fed intermediate pressure air from the regulator first stage through this LP inflator hose. This gives the diver the opportunity to add air to their BC directly from tank when they want to. Where the low-pressure inflator hose attaches to the buoyancy compensator inflation mechanism, a sleeve is used. This metallic sleeve needs to be held back when connecting the hose to the BC inflator. They are usually textured for easier grip in the water. The attachment opening connects the BC inflator to the LP hose. These come in a variety of sizes. "Still reading about my evil cyborg twin? Good job"! #4 Different Types of Scuba Regulator & Buyer's Guide
When the proud day arrives that you’re finally ready to invest in your own scuba regulator there’s two things you ought to do, to ensure you get the best model for you.

The best scuba regulator - Chicago Tribune The best scuba regulator
The best scuba regulator
How scuba regulators work
Considerations when choosing scuba regulators
Price
FAQ
Q. Do I need to buy first- and second-stage regulators from the same company?
Q. Do my regulators need regular maintenance?
Scuba regulators we recommend
 Our top pick is the outstanding Scubapro MK25 EVO/A700 Diving Regulator System, a combination that provides safety and easy breathing for experienced divers wherever they go and whatever conditions they encounter. How scuba regulators work
Scuba regulators are divided into first stage — which takes tank pressure down from a couple thousand pounds per square inch (psi) to around 140 psi — and second stage, the mouthpiece, which offers fine pressure adjustment for comfortable breathing. You may also have an octopus, or a standby second regulator for emergencies. Advertisement
The first-stage regulator is more complex. They are either diaphragm or piston operated. Diaphragms are more complicated but are actually cheaper to make. They’re often preferred for cold waters. Piston models are more expensive because although simpler they need to be made with greater precision. Piston regulators can handle higher air flow than those with a diaphragm. It can be important for professionals, though makes little difference to most leisure divers.

Our top pick is the outstanding Scubapro MK25 EVO/A700 Diving Regulator System, a combination that provides safety and easy breathing for experienced divers wherever they go and whatever conditions they encounter. How scuba regulators work
Scuba regulators are divided into first stage — which takes tank pressure down from a couple thousand pounds per square inch (psi) to around 140 psi — and second stage, the mouthpiece, which offers fine pressure adjustment for comfortable breathing. You may also have an octopus, or a standby second regulator for emergencies. Advertisement
The first-stage regulator is more complex. They are either diaphragm or piston operated. Diaphragms are more complicated but are actually cheaper to make. They’re often preferred for cold waters. Piston models are more expensive because although simpler they need to be made with greater precision. Piston regulators can handle higher air flow than those with a diaphragm. It can be important for professionals, though makes little difference to most leisure divers.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 1. First Stage
The regulator first stage attaches the regulator to the scuba tank. Remember, a diving regulator reduces the air from the scuba tank in stages as it travels from the tank to the diver. The first stage of the regulator is named for its function: it accomplishes the first stage of pressure reduction by reducing the high-pressure air in the tank to an intermediate pressure. The air travels through the low pressure (LP) regulator hoses at this intermediate pressure; however, the air at this intermediate pressure is still at too high to be breathed directly and requires further reduction. 2. Primary Second Stage
The part of the regulator that a diver puts in his mouth is called the second stage. The regulator second stage is attached to the first stage by a low-pressure hose.

1. First Stage
The regulator first stage attaches the regulator to the scuba tank. Remember, a diving regulator reduces the air from the scuba tank in stages as it travels from the tank to the diver. The first stage of the regulator is named for its function: it accomplishes the first stage of pressure reduction by reducing the high-pressure air in the tank to an intermediate pressure. The air travels through the low pressure (LP) regulator hoses at this intermediate pressure; however, the air at this intermediate pressure is still at too high to be breathed directly and requires further reduction. 2. Primary Second Stage
The part of the regulator that a diver puts in his mouth is called the second stage. The regulator second stage is attached to the first stage by a low-pressure hose.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 The second stage uses a flexible silicone diaphragm to seal water out and air inside. There is a lever that rests against the diaphragm on the interior of the second stage. This lever operates the valve in the inlet fitting. When a diver inhales, he lowers the air pressure inside the second stage by taking some of its air into his lungs. This allows water on the outside to push the diaphragm in slightly, which pushes on the lever, opening the valve, and allowing air to rush in until the pressure equals the outside water pressure, which is ambient pressure. The simple genius of this design is that the water pressure surrounding the regulator creates the ambient pressure. The result is that the second stage automatically adjusts to the diver's depth. Was this page helpful? Thanks for letting us know! Share
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The second stage uses a flexible silicone diaphragm to seal water out and air inside. There is a lever that rests against the diaphragm on the interior of the second stage. This lever operates the valve in the inlet fitting. When a diver inhales, he lowers the air pressure inside the second stage by taking some of its air into his lungs. This allows water on the outside to push the diaphragm in slightly, which pushes on the lever, opening the valve, and allowing air to rush in until the pressure equals the outside water pressure, which is ambient pressure. The simple genius of this design is that the water pressure surrounding the regulator creates the ambient pressure. The result is that the second stage automatically adjusts to the diver's depth. Was this page helpful? Thanks for letting us know! Share
Pin
Email
Tell us why!

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 The second stage reduces air from intermediate pressure to ambient pressure so that a diver may safely and comfortably breathe. Another important feature of a second stage is that it allows air to flow to the diver's mouth only when he inhales. This is a vital feature of scuba diving regulators as a constant flow of air would deplete the tank very quickly. The second stage consists of a single air chamber with a valve in the inlet fitting for the hose from the first stage. This valve stays closed except when a diver inhales and separates intermediate pressure air in the hose from ambient air in the second stage. The second stage uses a flexible silicone diaphragm to seal water out and air inside. There is a lever that rests against the diaphragm on the interior of the second stage. This lever operates the valve in the inlet fitting. When a diver inhales, he lowers the air pressure inside the second stage by taking some of its air into his lungs. This allows water on the outside to push the diaphragm in slightly, which pushes on the lever, opening the valve, and allowing air to rush in until the pressure equals the outside water pressure, which is ambient pressure.

The second stage reduces air from intermediate pressure to ambient pressure so that a diver may safely and comfortably breathe. Another important feature of a second stage is that it allows air to flow to the diver's mouth only when he inhales. This is a vital feature of scuba diving regulators as a constant flow of air would deplete the tank very quickly. The second stage consists of a single air chamber with a valve in the inlet fitting for the hose from the first stage. This valve stays closed except when a diver inhales and separates intermediate pressure air in the hose from ambient air in the second stage. The second stage uses a flexible silicone diaphragm to seal water out and air inside. There is a lever that rests against the diaphragm on the interior of the second stage. This lever operates the valve in the inlet fitting. When a diver inhales, he lowers the air pressure inside the second stage by taking some of its air into his lungs. This allows water on the outside to push the diaphragm in slightly, which pushes on the lever, opening the valve, and allowing air to rush in until the pressure equals the outside water pressure, which is ambient pressure.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 The first stage of a scuba diving regulator is the part of the regulator that attaches to the tank valve. Second Stage: The second stage of a scuba diving regulator is the part that the diver puts into his mouth. Tank Pressure: The pressure of the air in a scuba tank. Air inside a tank is compressed to a very high pressure in order to carry an adequate supply of breathing gas for a scuba dive. For a frame of reference, pneumatic tools such as those used by mechanics commonly operate at 90 - 140 psi. A full scuba tank is often pressurized to 3000 psi. Intermediate Pressure: The pressure of the air output from the first stage and sent to the second stage.

The first stage of a scuba diving regulator is the part of the regulator that attaches to the tank valve. Second Stage: The second stage of a scuba diving regulator is the part that the diver puts into his mouth. Tank Pressure: The pressure of the air in a scuba tank. Air inside a tank is compressed to a very high pressure in order to carry an adequate supply of breathing gas for a scuba dive. For a frame of reference, pneumatic tools such as those used by mechanics commonly operate at 90 - 140 psi. A full scuba tank is often pressurized to 3000 psi. Intermediate Pressure: The pressure of the air output from the first stage and sent to the second stage.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 Inform yourself on the different types of scuba regulators; the variations of features, functions and purposes between them. You can do exactly that by reading this article on the different types of scuba regulators. Next, you’ll want to pick the best regulator for your own specific needs such as your level of diving experience, your budget and the kind of diving you plan to do. There’s literally hundreds of scuba regulators out there, but fear not! You can read brutally honest reviews of the hands down best scuba regulators. #5 How Does a Scuba Regulator Work? Giving that Scuba Octopus some Sweet Luvin'
Scuba tanks are filled with compressed air at an extremely high pressure. Trying to breathe directly from this is not possible, and would result in injury. The scuba octopus setup, or regulator, reduces the pressure of this compressed air to an ambient pressure that the diver can safely breathe.

Scuba Octopus Setup - Diving Squad

Inform yourself on the different types of scuba regulators; the variations of features, functions and purposes between them. You can do exactly that by reading this article on the different types of scuba regulators. Next, you’ll want to pick the best regulator for your own specific needs such as your level of diving experience, your budget and the kind of diving you plan to do. There’s literally hundreds of scuba regulators out there, but fear not! You can read brutally honest reviews of the hands down best scuba regulators. #5 How Does a Scuba Regulator Work? Giving that Scuba Octopus some Sweet Luvin'
Scuba tanks are filled with compressed air at an extremely high pressure. Trying to breathe directly from this is not possible, and would result in injury. The scuba octopus setup, or regulator, reduces the pressure of this compressed air to an ambient pressure that the diver can safely breathe.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand. Scuba regulators are simple devices, and the method in which they reduce high-pressure tank air to a breathable pressure is easy to understand. Even the simplest scuba regulators do this adequately, at all recreational diving depths and with remarkable reliability. Regulator Terminology
To understand how scuba diving regulators work, it is important to become familiar with some basic regulator vocabulary and concepts. First Stage: The first stage of a scuba diving regulator is the part of the regulator that attaches to the tank valve. Second Stage: The second stage of a scuba diving regulator is the part that the diver puts into his mouth. Tank Pressure: The pressure of the air in a scuba tank.

The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand. Scuba regulators are simple devices, and the method in which they reduce high-pressure tank air to a breathable pressure is easy to understand. Even the simplest scuba regulators do this adequately, at all recreational diving depths and with remarkable reliability. Regulator Terminology
To understand how scuba diving regulators work, it is important to become familiar with some basic regulator vocabulary and concepts. First Stage: The first stage of a scuba diving regulator is the part of the regulator that attaches to the tank valve. Second Stage: The second stage of a scuba diving regulator is the part that the diver puts into his mouth. Tank Pressure: The pressure of the air in a scuba tank.

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 You can read brutally honest reviews of the hands down best scuba regulators. #5 How Does a Scuba Regulator Work? Giving that Scuba Octopus some Sweet Luvin'
Scuba tanks are filled with compressed air at an extremely high pressure. Trying to breathe directly from this is not possible, and would result in injury. The scuba octopus setup, or regulator, reduces the pressure of this compressed air to an ambient pressure that the diver can safely breathe. This is achieved by the air traveling through a series of hoses and valves. The regulator then sends this breathable air to the diver. The scuba octopus setup works with two main stages: first stag

Scuba Octopus Setup - Diving Squad

You can read brutally honest reviews of the hands down best scuba regulators. #5 How Does a Scuba Regulator Work? Giving that Scuba Octopus some Sweet Luvin'
Scuba tanks are filled with compressed air at an extremely high pressure. Trying to breathe directly from this is not possible, and would result in injury. The scuba octopus setup, or regulator, reduces the pressure of this compressed air to an ambient pressure that the diver can safely breathe. This is achieved by the air traveling through a series of hoses and valves. The regulator then sends this breathable air to the diver. The scuba octopus setup works with two main stages: first stag

Scuba Octopus Setup - Diving Squad Scuba Octopus Setup
Scuba Octopus Setup
A Scuba Octopus consists of:
Index:
Attaching Regulator to Scuba Tank
Scuba Regulator Setup Diagram
Scuba Regulator Parts
Different Types of Regulator & Buyer’s Guide
How Does a Scuba Regulator Work?
Scuba Regulator Maintenance
#1 Attaching Regulator to Scuba Tank
To connect the regulator first stage to the oxygen tank:
#2 Scuba Regulator Setup Diagram
#3 Scuba Regulator Parts
First Stage
First Stage Parts:
Primary Second Stage
Alternate Second Stage
Console with Submersible Pressure Gauge
Low Pressure Inflator Hose
#4 Different Types of Scuba Regulator & Buyer's Guide
#5 How Does a Scuba Regulator Work?
First Stage Pressure Reduction
Second Stage - Pressure Reduction
#6 Scuba Regulator Maintenance
Diving Squad Debriefing
Support the Squad - Huzzah!
Written by:
Alex
Similar Articles:
 The attachment opening connects the BC inflator to the LP hose. These come in a variety of sizes. "Still reading about my evil cyborg twin? Good job"! #4 Different Types of Scuba Regulator & Buyer's Guide
When the proud day arrives that you’re finally ready to invest in your own scuba regulator there’s two things you ought to do, to ensure you get the best model for you. Inform yourself on the different types of scuba regulators; the variations of features, functions and purposes between them. You can do exactly that by reading this article on the different types of scuba regulators. Next, you’ll want to pick the best regulator for your own specific needs such as your level of diving experience, your budget and the kind of diving you plan to do. There’s literally hundreds of scuba regulators out there, but fear not!

Scuba Octopus Setup - Diving Squad

The attachment opening connects the BC inflator to the LP hose. These come in a variety of sizes. "Still reading about my evil cyborg twin? Good job"! #4 Different Types of Scuba Regulator & Buyer's Guide
When the proud day arrives that you’re finally ready to invest in your own scuba regulator there’s two things you ought to do, to ensure you get the best model for you. Inform yourself on the different types of scuba regulators; the variations of features, functions and purposes between them. You can do exactly that by reading this article on the different types of scuba regulators. Next, you’ll want to pick the best regulator for your own specific needs such as your level of diving experience, your budget and the kind of diving you plan to do. There’s literally hundreds of scuba regulators out there, but fear not!

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 Once the air in the second chamber reaches intermediate pressure, the valve between the two chambers closes, preventing the high-pressure air from the tank from flowing into the second chamber. When a diver inhales, air from the second chamber is released to the second stage. As the air in the second chamber is released, the pressure in the second chamber drops, allowing the valve between the two chambers to open. Air flows from the first chamber into the second chamber until the pressure in the second chamber rises to an intermediate pressure and once again forces the valve between the two chambers closed. The Regulator Second Stage: The second stage reduces air from intermediate pressure to ambient pressure so that a diver may safely and comfortably breathe. Another important feature of a second stage is that it allows air to flow to the diver's mouth only when he inhales. This is a vital feature of scuba diving regulators as a constant flow of air would deplete the tank very quickly. The second stage consists of a single air chamber with a valve in the inlet fitting for the hose from the first stage. This valve stays closed except when a diver inhales and separates intermediate pressure air in the hose from ambient air in the second stage.

Once the air in the second chamber reaches intermediate pressure, the valve between the two chambers closes, preventing the high-pressure air from the tank from flowing into the second chamber. When a diver inhales, air from the second chamber is released to the second stage. As the air in the second chamber is released, the pressure in the second chamber drops, allowing the valve between the two chambers to open. Air flows from the first chamber into the second chamber until the pressure in the second chamber rises to an intermediate pressure and once again forces the valve between the two chambers closed. The Regulator Second Stage: The second stage reduces air from intermediate pressure to ambient pressure so that a diver may safely and comfortably breathe. Another important feature of a second stage is that it allows air to flow to the diver's mouth only when he inhales. This is a vital feature of scuba diving regulators as a constant flow of air would deplete the tank very quickly. The second stage consists of a single air chamber with a valve in the inlet fitting for the hose from the first stage. This valve stays closed except when a diver inhales and separates intermediate pressure air in the hose from ambient air in the second stage.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 Common intermediate pressures are around 125 - 150 psi above ambient pressure. Ambient Pressure: The pressure surrounding a diver. Ambient pressure underwater is greater than pressure at the surface because pressure increases with depth. A scuba diving regulator delivers air to a diver's lungs at ambient pressure. Since the ambient pressure changes as a diver changes depth, scuba diving regulators must adjust the air delivered to ambient pressure as a diver ascends and descends. How Regulators Work
Scuba regulators reduce tank pressure in two steps. The first step of pressure reduction is from tank pressure to intermediate pressure, and the second step of pressure reduction is from intermediate pressure to ambient pressure. The Regulator First Stage: The first stage reduces air at tank pressure to intermediate pressure and releases the intermediate pressure air into a hose which feeds into the regulator's second stage.

Common intermediate pressures are around 125 - 150 psi above ambient pressure. Ambient Pressure: The pressure surrounding a diver. Ambient pressure underwater is greater than pressure at the surface because pressure increases with depth. A scuba diving regulator delivers air to a diver's lungs at ambient pressure. Since the ambient pressure changes as a diver changes depth, scuba diving regulators must adjust the air delivered to ambient pressure as a diver ascends and descends. How Regulators Work
Scuba regulators reduce tank pressure in two steps. The first step of pressure reduction is from tank pressure to intermediate pressure, and the second step of pressure reduction is from intermediate pressure to ambient pressure. The Regulator First Stage: The first stage reduces air at tank pressure to intermediate pressure and releases the intermediate pressure air into a hose which feeds into the regulator's second stage.

Scuba Diving Regulators Scuba Diving Regulators
Scuba Diving Regulators
Mares Loop 15X Regulator and Octopus Kit
Cressi XS Compact AC2 Regulator
Oceanic Alpha 10 + sPX DIN Regulator
OMS Airstream Evoque Regulator with Flex Hose
Mares Prestige 15X Regulator
Atomic Color Kit for B2 Regulator
Scubapro MK25 EVO/S600 Regulator
Scuba Regulator & Octo Grab Bag
Cressi Compact MC9 Regulator
Atomic Aquatics M1 Regulator, DIN
Cressi AC25M Master Cromo Regulator
Sherwood SR2 Regulator
Oceanic ZEO Swivel Regulator
Mares Rover 2S Regulator
Zeagle F8 Yoke Regulator
Aqua Lung Leg3nd Elite Regulator ~ New 2020
Scuba Diving Regulators Buying Guide
Top of the Line Scuba Regulators
Recreational Scuba Regulators
Economical Scuba Regulators
DIN Scuba Regulators
Scuba Regulator Accessories
 The first stage of a regulator attaches directly to the tank, reducing the pressure of the air leaving the tank by a preset amount. The second stage reduces the pressure yet again, bringing it down to ambient pressure, where you'll be able to breathe air comfortably. There are a number of options for both stages, including ports for pressure gauges, low pressure inflator hoses, and dry suit hoses. You can also choose whether or not the first stage of the regulator is balanced or unbalanced - the advantage of a balanced first stage is that it allows you to breathe just as easily at low tank pressures, or at depths of up to 90ft. With multiple options for adjustment knobs, air flow dials, and the like, you'll always be able to alter the regulator's flow rate to compensate for any changes in depth. Top of the Line Scuba Regulators
Preferred by expert and professional divers, a Top of the Line Scuba Regulator is constructed with bleeding edge innovations and materials. Many feature low-maintenance titanium components, many of which will never rust or corrode in any way. Top of the line scuba regulators usually come with a balanced 1st and 2nd stage, too, which provides superior breathing performance, even at greater depth and lower pressure. Known for their comfort-conscious design philosophy, Top of the Line Scuba Regulator manufacturers give special attention to concerns like mouthpiece comfort and jaw fatigue. Recreational Scuba Regulators
Recreational scuba regulators provide you with a quality piece of equipment at a reasonable price.

Scuba Diving Regulators

Scuba Diving Regulators
Scuba Diving Regulators
Mares Loop 15X Regulator and Octopus Kit
Cressi XS Compact AC2 Regulator
Oceanic Alpha 10 + sPX DIN Regulator
OMS Airstream Evoque Regulator with Flex Hose
Mares Prestige 15X Regulator
Atomic Color Kit for B2 Regulator
Scubapro MK25 EVO/S600 Regulator
Scuba Regulator & Octo Grab Bag
Cressi Compact MC9 Regulator
Atomic Aquatics M1 Regulator, DIN
Cressi AC25M Master Cromo Regulator
Sherwood SR2 Regulator
Oceanic ZEO Swivel Regulator
Mares Rover 2S Regulator
Zeagle F8 Yoke Regulator
Aqua Lung Leg3nd Elite Regulator ~ New 2020
Scuba Diving Regulators Buying Guide
Top of the Line Scuba Regulators
Recreational Scuba Regulators
Economical Scuba Regulators
DIN Scuba Regulators
Scuba Regulator Accessories

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 and second, from the intermediate pressure to a pressure that the divers can safely breathe. In it's most basic form, a scuba regulator consists of two parts: a mechanism that accomplishes the first stage of pressure reduction (called  first stage) and a mechanism that accomplishes the second stage of pressure reduction (called second stage ). However, contemporary scuba diving regulators usually incorporate a variety of additional accessories. 01
of 06
Basics parts of Open Water Scuba Diving Regulator
Natalie L Gibb
Five basic parts are usually included in a standard open water scuba diving regulator. 1. First Stage
The regulator first stage attaches the regulator to the scuba tank. Remember, a diving regulator reduces the air from the scuba tank in stages as it travels from the tank to the diver. The first stage of the regulator is named for its function: it accomplishes the first stage of pressure reduction by reducing the high-pressure air in the tank to an intermediate pressure.

and second, from the intermediate pressure to a pressure that the divers can safely breathe. In it's most basic form, a scuba regulator consists of two parts: a mechanism that accomplishes the first stage of pressure reduction (called  first stage) and a mechanism that accomplishes the second stage of pressure reduction (called second stage ). However, contemporary scuba diving regulators usually incorporate a variety of additional accessories. 01
of 06
Basics parts of Open Water Scuba Diving Regulator
Natalie L Gibb
Five basic parts are usually included in a standard open water scuba diving regulator. 1. First Stage
The regulator first stage attaches the regulator to the scuba tank. Remember, a diving regulator reduces the air from the scuba tank in stages as it travels from the tank to the diver. The first stage of the regulator is named for its function: it accomplishes the first stage of pressure reduction by reducing the high-pressure air in the tank to an intermediate pressure.

How a Scuba Diving Regulator Works - AquaViews - Leisure Pro How a Scuba Diving Regulator Works
How a Scuba Diving Regulator Works
What is a Scuba Diving Regulator?
How Does a Scuba Regulator Work?
Parts of a Scuba Diving Regulator
First Stage Regulator
Second Stage Regulator
Leisure Pro's AquaViews Newsletter
 The exact process, of course, also depends on your scuba tank’s valve type. The regulator also compensates for the decreased pressure in the tank as the air is used and as the diver changes depth, which changes the ambient water pressure. Second Stage Regulator
The second stage of a scuba regulator is the part that goes into your mouth. It contains a mechanism that further reduces the intermediate pressure in the hose coming from the first stage to the surrounding water pressure, making it comfortable and easy to breathe. As with the first stage, the second stage also contains a piston or diaphragm construction which starts and stops the airflow. The mouthpiece, exhaust valve, and an emergency purge valve (or button) are all part of the second stage of the scuba regulator. The exhaust valve lets the air escape into the water when you exhale. It is a one-way valve and does not allow water to enter from the outside. When the purge button (usually the front cover of the second stage in modern models) is pushed, it forces air to flow continuously into the second stage chamber forcing any water out of the mouthpiece through the exhaust valve. With this mechanism, divers are actually able to vomit while holding the second stage in their mouths instead of pulling it out and risking accidental water inhalation.

The exact process, of course, also depends on your scuba tank’s valve type. The regulator also compensates for the decreased pressure in the tank as the air is used and as the diver changes depth, which changes the ambient water pressure. Second Stage Regulator
The second stage of a scuba regulator is the part that goes into your mouth. It contains a mechanism that further reduces the intermediate pressure in the hose coming from the first stage to the surrounding water pressure, making it comfortable and easy to breathe. As with the first stage, the second stage also contains a piston or diaphragm construction which starts and stops the airflow. The mouthpiece, exhaust valve, and an emergency purge valve (or button) are all part of the second stage of the scuba regulator. The exhaust valve lets the air escape into the water when you exhale. It is a one-way valve and does not allow water to enter from the outside. When the purge button (usually the front cover of the second stage in modern models) is pushed, it forces air to flow continuously into the second stage chamber forcing any water out of the mouthpiece through the exhaust valve. With this mechanism, divers are actually able to vomit while holding the second stage in their mouths instead of pulling it out and risking accidental water inhalation.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 Description of Scuba Diving Regulator Parts
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The Five Basic Parts of a Scuba Diving Regulator
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By
Natalie Gibb
Natalie Gibb owns a dive shop in Mexico and is a PADI-certified open water scuba instructor and TDI-certified full cave diving instructor. our editorial process
Natalie Gibb
Updated May 24, 2019
A scuba diving regulator is the piece of equipment that enables a diver to breathe from a scuba tank. The regulator is so named because it regulates the pressure of the air a diver breathes. The compressed air inside a scuba tank is at an extremely high pressure, which could injure a diver who tries to breathe directly from the tank, and the regulator is necessary to reduce the pressure of the compressed air to a pressure the diver can breathe. To accomplish this, a regulator reduces air pressure in two steps, or stages--first, from the pressure in the tank to an intermediate pressure; and second, from the intermediate pressure to a pressure that the divers can safely breathe. In it's most basic form, a scuba regulator consists of two parts: a mechanism that accomplishes the first stage of pressure reduction (called  first stage) and a mechanism that accomplishes the second stage of pressure reduction (called second stage ). However, contemporary scuba diving regulators usually incorporate a variety of additional accessories. 01
of 06
Basics parts of Open Water Scuba Diving Regulator
Natalie L Gibb
Five basic parts are usually included in a standard open water scuba diving regulator.

How a Scuba Diving Regulator Works - AquaViews - Leisure Pro How a Scuba Diving Regulator Works
How a Scuba Diving Regulator Works
What is a Scuba Diving Regulator?
How Does a Scuba Regulator Work?
Parts of a Scuba Diving Regulator
First Stage Regulator
Second Stage Regulator
Leisure Pro's AquaViews Newsletter
 To help ensure your safety, as well as the proper use of your scuba diving equipment, it helps to know exactly how a scuba regulator works. How Does a Scuba Regulator Work? Scuba diving is essentially about being able to stay in the water—and at greater depths—for a long time. You’ll obviously need a lot of breathable air, but storing it in its basic form won’t allow you to last long underwater. The only way that more air can be brought with you underwater is to pressurize and compress it inside cylinder tanks. Divers then rely on scuba regulators to decrease the stored high-pressure air to a much safer pressure level every time they inhale through the connected mouthpiece. Parts of a Scuba Diving Regulator
Scuba regulators do the critical job of delivering breathable air from pressurized air tanks to divers by working in two stages: First Stage Regulator
As mentioned above, air is compressed and stored in the tank under high pressure, usually about 3,000 pounds per square inch (psi). In order to reduce this pressure, the regulator first stage, which attaches to the tank valve, lowers the tank pressure to intermediate pressure (about 140psi) for release into a hose that leads to the regulator’s second stage. The valve in the first stage opens to let some air into the hose and then closes again.

To help ensure your safety, as well as the proper use of your scuba diving equipment, it helps to know exactly how a scuba regulator works. How Does a Scuba Regulator Work? Scuba diving is essentially about being able to stay in the water—and at greater depths—for a long time. You’ll obviously need a lot of breathable air, but storing it in its basic form won’t allow you to last long underwater. The only way that more air can be brought with you underwater is to pressurize and compress it inside cylinder tanks. Divers then rely on scuba regulators to decrease the stored high-pressure air to a much safer pressure level every time they inhale through the connected mouthpiece. Parts of a Scuba Diving Regulator
Scuba regulators do the critical job of delivering breathable air from pressurized air tanks to divers by working in two stages: First Stage Regulator
As mentioned above, air is compressed and stored in the tank under high pressure, usually about 3,000 pounds per square inch (psi). In order to reduce this pressure, the regulator first stage, which attaches to the tank valve, lowers the tank pressure to intermediate pressure (about 140psi) for release into a hose that leads to the regulator’s second stage. The valve in the first stage opens to let some air into the hose and then closes again.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 When the first stage body is tightened onto a tank, it creates a water-tight seal to the tank valve. However, when the first stage body is disconnected from the tank, it is possible for water to enter the opening in the first stage, through which air passes from the tank to the regulator. The dust cap is a rubber cap that can be placed over the regulator first stage opening and tightened down using the regulator yoke screw. This seals closed the opening on the first stage. 5. Port/ Port Plug
Regulator first stage bodies have multiple openings, or ports, that regulator hoses can be screwed into. Usually, regulators have more ports than the standard number of hoses, which allows divers to position their hoses in a variety of configurations. These openings are called ports, and the plugs that close the regulator ports when they are not in use are called port plugs . 03
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Primary Second Stage
Natalie L Gibb
The regulator second stage is the part of the scuba diving regulator that a diver actually breathes from. The function of the second stage is to reduce intermediate-pressure air traveling through a regulator hose to an ambient pressure (the pressure of the surrounding water) that a diver can breathe safely.

When the first stage body is tightened onto a tank, it creates a water-tight seal to the tank valve. However, when the first stage body is disconnected from the tank, it is possible for water to enter the opening in the first stage, through which air passes from the tank to the regulator. The dust cap is a rubber cap that can be placed over the regulator first stage opening and tightened down using the regulator yoke screw. This seals closed the opening on the first stage. 5. Port/ Port Plug
Regulator first stage bodies have multiple openings, or ports, that regulator hoses can be screwed into. Usually, regulators have more ports than the standard number of hoses, which allows divers to position their hoses in a variety of configurations. These openings are called ports, and the plugs that close the regulator ports when they are not in use are called port plugs . 03
of 06
Primary Second Stage
Natalie L Gibb
The regulator second stage is the part of the scuba diving regulator that a diver actually breathes from. The function of the second stage is to reduce intermediate-pressure air traveling through a regulator hose to an ambient pressure (the pressure of the surrounding water) that a diver can breathe safely.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 4. Submersible Pressure Gauge and Gauge Console
The submersible pressure gauge (also called a pressure gauge or SPG) allows a diver to monitor the amount of air in his scuba tank so that he doesn't run out of air underwater. The pressure gauge is connected to the regulator first stage by a high-pressure hose (HP hose) that feeds high-pressure air from the tank directly to the pressure gauge. Frequently, the console containing the pressure gauge also holds a variety of other gauges, such as a depth gauge, compass, or dive computer. 5. Low-Pressure Inflator Hose
This low-pressure hose carries intermediate-pressure air from the regulator first stage to the Buoyancy Compensator's (BC) inflator. This allows divers to add air to the BC from the tank at the touch of the button. Let's look at each of these five components in greater detail. 02
of 06
First Stage
Natalie L Gibb
A scuba diving regulator first stage is the part of the regulator that accomplishes the first stage of pressure reduction, reducing the high-pressure tank air to an intermediate pressure. An open-water-style regulator first stage usually connects to four hoses--three that transport intermediate-pressure air to second stages and the buoyancy compensator's (BC) inflator, and one that allows high-pressure air to flow directly from the tank to the submersible pressure gauge.

4. Submersible Pressure Gauge and Gauge Console
The submersible pressure gauge (also called a pressure gauge or SPG) allows a diver to monitor the amount of air in his scuba tank so that he doesn't run out of air underwater. The pressure gauge is connected to the regulator first stage by a high-pressure hose (HP hose) that feeds high-pressure air from the tank directly to the pressure gauge. Frequently, the console containing the pressure gauge also holds a variety of other gauges, such as a depth gauge, compass, or dive computer. 5. Low-Pressure Inflator Hose
This low-pressure hose carries intermediate-pressure air from the regulator first stage to the Buoyancy Compensator's (BC) inflator. This allows divers to add air to the BC from the tank at the touch of the button. Let's look at each of these five components in greater detail. 02
of 06
First Stage
Natalie L Gibb
A scuba diving regulator first stage is the part of the regulator that accomplishes the first stage of pressure reduction, reducing the high-pressure tank air to an intermediate pressure. An open-water-style regulator first stage usually connects to four hoses--three that transport intermediate-pressure air to second stages and the buoyancy compensator's (BC) inflator, and one that allows high-pressure air to flow directly from the tank to the submersible pressure gauge.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 Low-Pressure Inflator Hose
This low-pressure hose carries intermediate-pressure air from the regulator first stage to the Buoyancy Compensator's (BC) inflator. This allows divers to add air to the BC from the tank at the touch of the button. Let's look at each of these five components in greater detail. 02
of 06
First Stage
Natalie L Gibb
A scuba diving regulator first stage is the part of the regulator that accomplishes the first stage of pressure reduction, reducing the high-pressure tank air to an intermediate pressure. An open-water-style regulator first stage usually connects to four hoses--three that transport intermediate-pressure air to second stages and the buoyancy compensator's (BC) inflator, and one that allows high-pressure air to flow directly from the tank to the submersible pressure gauge. 1. First Stage Body
This metal cylinder contains the mechanisms that reduce the high-pressure air in the scuba tank to an intermediate pressure. High-pressure air flows in one side of the first stage body; undergoes pressure reduction; then flows out through the low-pressure hoses.

Low-Pressure Inflator Hose
This low-pressure hose carries intermediate-pressure air from the regulator first stage to the Buoyancy Compensator's (BC) inflator. This allows divers to add air to the BC from the tank at the touch of the button. Let's look at each of these five components in greater detail. 02
of 06
First Stage
Natalie L Gibb
A scuba diving regulator first stage is the part of the regulator that accomplishes the first stage of pressure reduction, reducing the high-pressure tank air to an intermediate pressure. An open-water-style regulator first stage usually connects to four hoses--three that transport intermediate-pressure air to second stages and the buoyancy compensator's (BC) inflator, and one that allows high-pressure air to flow directly from the tank to the submersible pressure gauge. 1. First Stage Body
This metal cylinder contains the mechanisms that reduce the high-pressure air in the scuba tank to an intermediate pressure. High-pressure air flows in one side of the first stage body; undergoes pressure reduction; then flows out through the low-pressure hoses.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 Many second stage adjustments have a setting labeled "pre-dive" to help prevent free flow at the surface, and one labeled "dive" for easy breathing once underwater. As a diver descends, he can adjust the ease of breathing to compensate for the increased difficulty of breathing as he descends . 3. Exhaust Valve
The second stage exhaust valve is the plastic unit that channels exhaled air bubbles away from a diver's face. The exhaust valve is usually located below the regulator's mouthpiece to channel air down and to the sides. This helps to keep a diver's field of vision clear of bubbles. 4. Mouthpiece
The mouthpiece is the part of the regulator that a diver bites down on. High-quality mouthpieces are made of silicon or soft rubber (not plastic) and come in a variety of shapes and sizes to fit divers' mouths. Mouthpieces are removable and replaceable.

Many second stage adjustments have a setting labeled "pre-dive" to help prevent free flow at the surface, and one labeled "dive" for easy breathing once underwater. As a diver descends, he can adjust the ease of breathing to compensate for the increased difficulty of breathing as he descends . 3. Exhaust Valve
The second stage exhaust valve is the plastic unit that channels exhaled air bubbles away from a diver's face. The exhaust valve is usually located below the regulator's mouthpiece to channel air down and to the sides. This helps to keep a diver's field of vision clear of bubbles. 4. Mouthpiece
The mouthpiece is the part of the regulator that a diver bites down on. High-quality mouthpieces are made of silicon or soft rubber (not plastic) and come in a variety of shapes and sizes to fit divers' mouths. Mouthpieces are removable and replaceable.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 The air travels through the low pressure (LP) regulator hoses at this intermediate pressure; however, the air at this intermediate pressure is still at too high to be breathed directly and requires further reduction. 2. Primary Second Stage
The part of the regulator that a diver puts in his mouth is called the second stage. The regulator second stage is attached to the first stage by a low-pressure hose. The name “second stage” comes from this part's function as the second stage of pressure reduction. It takes the intermediate pressure air from the regulator hose and reduces it to ambient pressure-- a pressure equivalent to the air or water pressure surrounding a diver, allowing a diver to breathe from the second stage safely. The primary second stage is one of two second stages attached to a standard open water regulator, and it is this one that a diver normally breathes from during a dive. 3. Alternate Second Stage
The alternate second stage (also known as an alternate air source, buddy regulator, or octopus) does the exact same thing as the primary second stage:

The air travels through the low pressure (LP) regulator hoses at this intermediate pressure; however, the air at this intermediate pressure is still at too high to be breathed directly and requires further reduction. 2. Primary Second Stage
The part of the regulator that a diver puts in his mouth is called the second stage. The regulator second stage is attached to the first stage by a low-pressure hose. The name “second stage” comes from this part's function as the second stage of pressure reduction. It takes the intermediate pressure air from the regulator hose and reduces it to ambient pressure-- a pressure equivalent to the air or water pressure surrounding a diver, allowing a diver to breathe from the second stage safely. The primary second stage is one of two second stages attached to a standard open water regulator, and it is this one that a diver normally breathes from during a dive. 3. Alternate Second Stage
The alternate second stage (also known as an alternate air source, buddy regulator, or octopus) does the exact same thing as the primary second stage:

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 Learn about common regulator concerns, terms, and myths. A bit of understanding and education will allow new divers to breathe easily (no pun intended!) when choosing a scuba diving regulator. What a Scuba Diving Regulator Does
Obviously, a scuba diving regulator allows a diver to breathe from a tank underwater. But how does a regulator transfer the high-pressure air from the scuba tank to the diver's lungs at a pressure that will not injure him? The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand. Scuba regulators are simple devices, and the method in which they reduce high-pressure tank air to a breathable pressure is easy to understand. Even the simplest scuba regulators do this adequately, at all recreational diving depths and with remarkable reliability. Regulator Terminology
To understand how scuba diving regulators work, it is important to become familiar with some basic regulator vocabulary and concepts. First Stage:

Learn about common regulator concerns, terms, and myths. A bit of understanding and education will allow new divers to breathe easily (no pun intended!) when choosing a scuba diving regulator. What a Scuba Diving Regulator Does
Obviously, a scuba diving regulator allows a diver to breathe from a tank underwater. But how does a regulator transfer the high-pressure air from the scuba tank to the diver's lungs at a pressure that will not injure him? The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand. Scuba regulators are simple devices, and the method in which they reduce high-pressure tank air to a breathable pressure is easy to understand. Even the simplest scuba regulators do this adequately, at all recreational diving depths and with remarkable reliability. Regulator Terminology
To understand how scuba diving regulators work, it is important to become familiar with some basic regulator vocabulary and concepts. First Stage:

How a Scuba Diving Regulator Works - AquaViews - Leisure Pro How a Scuba Diving Regulator Works
How a Scuba Diving Regulator Works
What is a Scuba Diving Regulator?
How Does a Scuba Regulator Work?
Parts of a Scuba Diving Regulator
First Stage Regulator
Second Stage Regulator
Leisure Pro's AquaViews Newsletter
 And in this article, we aim to help you understand one of the most important pieces of your scuba equipment —your scuba regulator. What is a Scuba Diving Regulator? A scuba regulator is literally the lifeline between you and your air source while diving. It is the most important and key piece of any diver’s equipment as it connects to the gas cylinder (or tank) and allows the diver to breathe air from the tank. Together, the regulator and tank make up a self-contained underwater breathing apparatus (SCUBA), which is what makes breathing possible underwater. To help ensure your safety, as well as the proper use of your scuba diving equipment, it helps to know exactly how a scuba regulator works. How Does a Scuba Regulator Work? Scuba diving is essentially about being able to stay in the water—and at greater depths—for a long time. You’ll obviously need a lot of breathable air, but storing it in its basic form won’t allow you to last long underwater. The only way that more air can be brought with you underwater is to pressurize and compress it inside cylinder tanks.

And in this article, we aim to help you understand one of the most important pieces of your scuba equipment —your scuba regulator. What is a Scuba Diving Regulator? A scuba regulator is literally the lifeline between you and your air source while diving. It is the most important and key piece of any diver’s equipment as it connects to the gas cylinder (or tank) and allows the diver to breathe air from the tank. Together, the regulator and tank make up a self-contained underwater breathing apparatus (SCUBA), which is what makes breathing possible underwater. To help ensure your safety, as well as the proper use of your scuba diving equipment, it helps to know exactly how a scuba regulator works. How Does a Scuba Regulator Work? Scuba diving is essentially about being able to stay in the water—and at greater depths—for a long time. You’ll obviously need a lot of breathable air, but storing it in its basic form won’t allow you to last long underwater. The only way that more air can be brought with you underwater is to pressurize and compress it inside cylinder tanks.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 Air inside a tank is compressed to a very high pressure in order to carry an adequate supply of breathing gas for a scuba dive. For a frame of reference, pneumatic tools such as those used by mechanics commonly operate at 90 - 140 psi. A full scuba tank is often pressurized to 3000 psi. Intermediate Pressure: The pressure of the air output from the first stage and sent to the second stage. Common intermediate pressures are around 125 - 150 psi above ambient pressure. Ambient Pressure: The pressure surrounding a diver. Ambient pressure underwater is greater than pressure at the surface because pressure increases with depth. A scuba diving regulator delivers air to a diver's lungs at ambient pressure.

Air inside a tank is compressed to a very high pressure in order to carry an adequate supply of breathing gas for a scuba dive. For a frame of reference, pneumatic tools such as those used by mechanics commonly operate at 90 - 140 psi. A full scuba tank is often pressurized to 3000 psi. Intermediate Pressure: The pressure of the air output from the first stage and sent to the second stage. Common intermediate pressures are around 125 - 150 psi above ambient pressure. Ambient Pressure: The pressure surrounding a diver. Ambient pressure underwater is greater than pressure at the surface because pressure increases with depth. A scuba diving regulator delivers air to a diver's lungs at ambient pressure.

Regulator Features - The Scuba Doctor Regulator Features
Regulator Features
Advice on choosing the right scuba regulator for you.
General Scuba Regulator Guidelines
Free Assembly
Scuba Regulator Choices
DIN vs Yoke (A-Clamp) Regulators
Balanced/Unbalanced Regulators
Cold Water Kit
Piston vs Diaphragm Regulators
Overbalanced Regulators
Scuba Regulator Ports
Nitrox Compatible Regulators
Compact Second Stage Regulators
Side Vented Second Stage Regulators
 However, modern regulators all come up to a very high minimum standard so whichever you decide to purchase, you are unlikely to be disappointed. For a large range of Regulator and Octopus options for all conditions visit the Regulators section in the The Scuba Doctor Online Dive Shop. For a large range of Instrument options for all conditions visit the Instruments section in the The Scuba Doctor Online Dive Shop. General Scuba Regulator Guidelines
The basic rule of thumb with selecting a diving regulator is to go for the most expensive you can afford that is most suited to the diving you will be doing. The more you spend the easier it will be to breathe from. When purchasing your regulator you will need to buy the three major parts – the 1st and 2nd stage (regulator set), the alternate air source (octopus) and the instruments. As with most purchases, going for major brand names assures a certain level of quality and even though many of us like a bargain, with scuba equipment, the more you spend the better the equipment you get. So, if you thought your regulator would include an octopus and gauges, take your regulator budget and deduct between 30% to 40% to allow for the basic instruments you will need. Whatever is left is what you can afford for your regulator. You should always use the same brand of 1st and 2nd stages, plus the octopus you choose should also be from the same manufacturer as your first stage regulator to ensure the intermediate pressures are compatible.

Regulator Features - The Scuba Doctor

How a Scuba Diving Regulator Works - AquaViews - Leisure Pro How a Scuba Diving Regulator Works
How a Scuba Diving Regulator Works
What is a Scuba Diving Regulator?
How Does a Scuba Regulator Work?
Parts of a Scuba Diving Regulator
First Stage Regulator
Second Stage Regulator
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 The mouthpiece, exhaust valve, and an emergency purge valve (or button) are all part of the second stage of the scuba regulator. The exhaust valve lets the air escape into the water when you exhale. It is a one-way valve and does not allow water to enter from the outside. When the purge button (usually the front cover of the second stage in modern models) is pushed, it forces air to flow continuously into the second stage chamber forcing any water out of the mouthpiece through the exhaust valve. With this mechanism, divers are actually able to vomit while holding the second stage in their mouths instead of pulling it out and risking accidental water inhalation. It’s not pleasant to think about, but what is nice to consider is that this wonderful piece of technology makes it possible to survive underwater—even in the least optimum conditions—until you can safely return to the surface. To gain a much better understanding of the different parts of a scuba diving regulator and how they work, check out this video below: YouTube
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How Scuba Works
Wet Suits, Dry Suits, and Buoyancy Control
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Effects of Scuba Diving on the Body
Scuba: Additional Equipment
Scuba Training
Amateur levels
 The typical cylinder is made of aluminum, weighs about 31 pounds (14 kg) empty and holds 80 cubic feet (2,265 L) of air at 3000 pounds per square-inch (psi), or 204 atmospheres (ATM). This volume of gas would approximately fill a phone booth and weighs about 7 pounds (3.2 kg). Scuba gas cylinders
Scuba regulator, showing second stage (left) and first stage (right)
You cannot breathe directly out of the tank because the high pressure would damage your lungs. Therefore, the cylinder is fitted with a regulator. The regulator does two things: It reduces the pressure from the tank to a safe level for you to inhale, and it supplies air on-demand. To accomplish these tasks, regulators have two stages: First stage - The first stage attaches to the cylinder. It reduces the pressure from the tank (3000 psi or 204 ATM) to an intermediate pressure (140 psi or 9.5 ATM). Second stage - The second stage is connected to the first stage by a hose.

How Scuba Works | HowStuffWorks

The typical cylinder is made of aluminum, weighs about 31 pounds (14 kg) empty and holds 80 cubic feet (2,265 L) of air at 3000 pounds per square-inch (psi), or 204 atmospheres (ATM). This volume of gas would approximately fill a phone booth and weighs about 7 pounds (3.2 kg). Scuba gas cylinders
Scuba regulator, showing second stage (left) and first stage (right)
You cannot breathe directly out of the tank because the high pressure would damage your lungs. Therefore, the cylinder is fitted with a regulator. The regulator does two things: It reduces the pressure from the tank to a safe level for you to inhale, and it supplies air on-demand. To accomplish these tasks, regulators have two stages: First stage - The first stage attaches to the cylinder. It reduces the pressure from the tank (3000 psi or 204 ATM) to an intermediate pressure (140 psi or 9.5 ATM). Second stage - The second stage is connected to the first stage by a hose.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 it reduces intermediate air pressure supplied by a low-pressure hose to an ambient air pressure that a diver can breathe. The alternate second stage is a back-up, that ordinarily is not used. It enables a diver to share air from his tank with a second diver in case of an out-of-air emergency. Alternate second stages are usually bright colors, such as neon yellow, which allows them to be quickly located. As diver education and safety procedures have evolved, alternate second stages have become standard scuba diving safety gear, allowing any diver to breathe from any other diver's tank. 4. Submersible Pressure Gauge and Gauge Console
The submersible pressure gauge (also called a pressure gauge or SPG) allows a diver to monitor the amount of air in his scuba tank so that he doesn't run out of air underwater. The pressure gauge is connected to the regulator first stage by a high-pressure hose (HP hose) that feeds high-pressure air from the tank directly to the pressure gauge. Frequently, the console containing the pressure gauge also holds a variety of other gauges, such as a depth gauge, compass, or dive computer. 5.

it reduces intermediate air pressure supplied by a low-pressure hose to an ambient air pressure that a diver can breathe. The alternate second stage is a back-up, that ordinarily is not used. It enables a diver to share air from his tank with a second diver in case of an out-of-air emergency. Alternate second stages are usually bright colors, such as neon yellow, which allows them to be quickly located. As diver education and safety procedures have evolved, alternate second stages have become standard scuba diving safety gear, allowing any diver to breathe from any other diver's tank. 4. Submersible Pressure Gauge and Gauge Console
The submersible pressure gauge (also called a pressure gauge or SPG) allows a diver to monitor the amount of air in his scuba tank so that he doesn't run out of air underwater. The pressure gauge is connected to the regulator first stage by a high-pressure hose (HP hose) that feeds high-pressure air from the tank directly to the pressure gauge. Frequently, the console containing the pressure gauge also holds a variety of other gauges, such as a depth gauge, compass, or dive computer. 5.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 Scuba Diving Regulators (First and Second Stages)
Outdoors Water Sports
How a Scuba Regulator Works
A Beginner’s Guide to Scuba Regulators
Written by
Matthew Dunne is an avid scuba diver and a collector of vintage regulators. He currently maintains an ever-growing collection of Scubapro and U.S. Divers regulators. Tripsavvy's Editorial Guidelines
Matt Dunne, Regulator Nerd and Enthusiast
Updated 07/10/18
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Zero Creatives / Getty Images
Few pieces of sporting equipment carry more mystique than scuba regulators. Regulators are sold with a dizzying array of choices, features, and often hype, and there may be a fierce loyalty to brands among experienced divers. Is all the hype justified? Learn about common regulator concerns, terms, and myths. A bit of understanding and education will allow new divers to breathe easily (no pun intended!) when choosing a scuba diving regulator. What a Scuba Diving Regulator Does
Obviously, a scuba diving regulator allows a diver to breathe from a tank underwater. But how does a regulator transfer the high-pressure air from the scuba tank to the diver's lungs at a pressure that will not injure him?

Scuba Diving Regulators (First and Second Stages)
Outdoors Water Sports
How a Scuba Regulator Works
A Beginner’s Guide to Scuba Regulators
Written by
Matthew Dunne is an avid scuba diver and a collector of vintage regulators. He currently maintains an ever-growing collection of Scubapro and U.S. Divers regulators. Tripsavvy's Editorial Guidelines
Matt Dunne, Regulator Nerd and Enthusiast
Updated 07/10/18
Share
Pin
Email
Zero Creatives / Getty Images
Few pieces of sporting equipment carry more mystique than scuba regulators. Regulators are sold with a dizzying array of choices, features, and often hype, and there may be a fierce loyalty to brands among experienced divers. Is all the hype justified? Learn about common regulator concerns, terms, and myths. A bit of understanding and education will allow new divers to breathe easily (no pun intended!) when choosing a scuba diving regulator. What a Scuba Diving Regulator Does
Obviously, a scuba diving regulator allows a diver to breathe from a tank underwater. But how does a regulator transfer the high-pressure air from the scuba tank to the diver's lungs at a pressure that will not injure him?

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 Divers use the purge button when the second stage has been allowed to fill with water--for example, when a diver removes the regulator from his mouth during the regulator recovery skill . 2. Ease of Breathing Adjustment
Most regulators have a lever or knob that allows divers to adjust breathing resistance. This feature helps to prevent regulator free flow (a state when air flows rapidly out of the regulator second stage without the diver breathing from it), which typically occurs when the breathing resistance has been lowered too much. A free flow can quickly empty a tank. Many second stage adjustments have a setting labeled "pre-dive" to help prevent free flow at the surface, and one labeled "dive" for easy breathing once underwater. As a diver descends, he can adjust the ease of breathing to compensate for the increased difficulty of breathing as he descends . 3. Exhaust Valve
The second stage exhaust valve is the plastic unit that channels exhaled air bubbles away from a diver's face. The exhaust valve is usually located below the regulator's mouthpiece to channel air down and to the sides.

Divers use the purge button when the second stage has been allowed to fill with water--for example, when a diver removes the regulator from his mouth during the regulator recovery skill . 2. Ease of Breathing Adjustment
Most regulators have a lever or knob that allows divers to adjust breathing resistance. This feature helps to prevent regulator free flow (a state when air flows rapidly out of the regulator second stage without the diver breathing from it), which typically occurs when the breathing resistance has been lowered too much. A free flow can quickly empty a tank. Many second stage adjustments have a setting labeled "pre-dive" to help prevent free flow at the surface, and one labeled "dive" for easy breathing once underwater. As a diver descends, he can adjust the ease of breathing to compensate for the increased difficulty of breathing as he descends . 3. Exhaust Valve
The second stage exhaust valve is the plastic unit that channels exhaled air bubbles away from a diver's face. The exhaust valve is usually located below the regulator's mouthpiece to channel air down and to the sides.

How Scuba Works | HowStuffWorks How Scuba Works
How Scuba Works
Wet Suits, Dry Suits, and Buoyancy Control
Scuba Breathing Apparatus
Diving Physics, Physiology and Hazards
Effects of Scuba Diving on the Body
Scuba: Additional Equipment
Scuba Training
Amateur levels
 The membrane moves away, allowing the lever to return to its normal position and thereby closing the inlet valve. The increased second-stage pressure opens the exhaust valve and allows the exhaled air to leave the second stage. When you inhale again, the exhaust valve closes and the process repeats. Operation of the regulator's second stage
The regulator must be cleaned with freshwater after each dive to eliminate salt water, silt and debris that would prevent the movements of the various valves and membranes and corrode the parts. Regulators should also be serviced at least once per year. Because the regulator is one of the most important pieces of equipment, many divers choose to purchase their own regulators (instead of rent) so that they can be confident that the regulator is in good working order and has been properly maintained. The final parts of the breathing apparatus are accessories that contain emergency or alternate air supplies. They include the following: Pony tanks - These are smaller cylinders that strap onto the main cylinder. Pony tanks contain air and have their own regulators.

How Scuba Works | HowStuffWorks

The membrane moves away, allowing the lever to return to its normal position and thereby closing the inlet valve. The increased second-stage pressure opens the exhaust valve and allows the exhaled air to leave the second stage. When you inhale again, the exhaust valve closes and the process repeats. Operation of the regulator's second stage
The regulator must be cleaned with freshwater after each dive to eliminate salt water, silt and debris that would prevent the movements of the various valves and membranes and corrode the parts. Regulators should also be serviced at least once per year. Because the regulator is one of the most important pieces of equipment, many divers choose to purchase their own regulators (instead of rent) so that they can be confident that the regulator is in good working order and has been properly maintained. The final parts of the breathing apparatus are accessories that contain emergency or alternate air supplies. They include the following: Pony tanks - These are smaller cylinders that strap onto the main cylinder. Pony tanks contain air and have their own regulators.

Scuba Diving Regulators (First and Second Stages) How a Scuba Regulator Works
How a Scuba Regulator Works
What a Scuba Diving Regulator Does
The purpose of a scuba diving regulator is to reduce the high pressure air in a scuba tank to a breatheable pressure on demand.
Regulator Terminology
How Regulators Work
The Regulator First Stage:
The Regulator Second Stage:
 The simple genius of this design is that the water pressure surrounding the regulator creates the ambient pressure. The result is that the second stage automatically adjusts to the diver's depth. Was this page helpful? Thanks for letting us know! Share
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The simple genius of this design is that the water pressure surrounding the regulator creates the ambient pressure. The result is that the second stage automatically adjusts to the diver's depth. Was this page helpful? Thanks for letting us know! Share
Pin
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Tell us why! Submit

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 This helps to keep a diver's field of vision clear of bubbles. 4. Mouthpiece
The mouthpiece is the part of the regulator that a diver bites down on. High-quality mouthpieces are made of silicon or soft rubber (not plastic) and come in a variety of shapes and sizes to fit divers' mouths. Mouthpieces are removable and replaceable. A diver should check to make sure that his mouthpiece is secured to the regulator second stage with a zip tie or cable tie to ensure that it does not slide off during a dive. 04
of 06
Alternate Second Stage
Natalie L Gibb
An alternate second stage (also called an alternate air source, buddy regulator, or octopus) does exactly the same thing as a primary second stage. The alternate second stage is not intended to be used except in the case of an out-of-air emergency. A diver with an alternate second stage can allow an out-of-air diver to breathe from his tank without putting himself at risk. 1.

This helps to keep a diver's field of vision clear of bubbles. 4. Mouthpiece
The mouthpiece is the part of the regulator that a diver bites down on. High-quality mouthpieces are made of silicon or soft rubber (not plastic) and come in a variety of shapes and sizes to fit divers' mouths. Mouthpieces are removable and replaceable. A diver should check to make sure that his mouthpiece is secured to the regulator second stage with a zip tie or cable tie to ensure that it does not slide off during a dive. 04
of 06
Alternate Second Stage
Natalie L Gibb
An alternate second stage (also called an alternate air source, buddy regulator, or octopus) does exactly the same thing as a primary second stage. The alternate second stage is not intended to be used except in the case of an out-of-air emergency. A diver with an alternate second stage can allow an out-of-air diver to breathe from his tank without putting himself at risk. 1.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 A primary second stage is one of two second stages on a standard open-water-style regulator. Unless there is an emergency, a diver breathes from this primary second stage during a dive. 1. Purge Button
The purge button is located on the face of the regulator second stage. The purpose of the purge button is to flood the second stage with air, forcing water out of the second stage. Divers use the purge button when the second stage has been allowed to fill with water--for example, when a diver removes the regulator from his mouth during the regulator recovery skill . 2. Ease of Breathing Adjustment
Most regulators have a lever or knob that allows divers to adjust breathing resistance. This feature helps to prevent regulator free flow (a state when air flows rapidly out of the regulator second stage without the diver breathing from it), which typically occurs when the breathing resistance has been lowered too much. A free flow can quickly empty a tank.

A primary second stage is one of two second stages on a standard open-water-style regulator. Unless there is an emergency, a diver breathes from this primary second stage during a dive. 1. Purge Button
The purge button is located on the face of the regulator second stage. The purpose of the purge button is to flood the second stage with air, forcing water out of the second stage. Divers use the purge button when the second stage has been allowed to fill with water--for example, when a diver removes the regulator from his mouth during the regulator recovery skill . 2. Ease of Breathing Adjustment
Most regulators have a lever or knob that allows divers to adjust breathing resistance. This feature helps to prevent regulator free flow (a state when air flows rapidly out of the regulator second stage without the diver breathing from it), which typically occurs when the breathing resistance has been lowered too much. A free flow can quickly empty a tank.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 Port/ Port Plug
Regulator first stage bodies have multiple openings, or ports, that regulator hoses can be screwed into. Usually, regulators have more ports than the standard number of hoses, which allows divers to position their hoses in a variety of configurations. These openings are called ports, and the plugs that close the regulator ports when they are not in use are called port plugs . 03
of 06
Primary Second Stage
Natalie L Gibb
The regulator second stage is the part of the scuba diving regulator that a diver actually breathes from. The function of the second stage is to reduce intermediate-pressure air traveling through a regulator hose to an ambient pressure (the pressure of the surrounding water) that a diver can breathe safely. A primary second stage is one of two second stages on a standard open-water-style regulator. Unless there is an emergency, a diver breathes from this primary second stage during a dive. 1. Purge Button
The purge button is located on the face of the regulator second stage. The purpose of the purge button is to flood the second stage with air, forcing water out of the second stage.

Port/ Port Plug
Regulator first stage bodies have multiple openings, or ports, that regulator hoses can be screwed into. Usually, regulators have more ports than the standard number of hoses, which allows divers to position their hoses in a variety of configurations. These openings are called ports, and the plugs that close the regulator ports when they are not in use are called port plugs . 03
of 06
Primary Second Stage
Natalie L Gibb
The regulator second stage is the part of the scuba diving regulator that a diver actually breathes from. The function of the second stage is to reduce intermediate-pressure air traveling through a regulator hose to an ambient pressure (the pressure of the surrounding water) that a diver can breathe safely. A primary second stage is one of two second stages on a standard open-water-style regulator. Unless there is an emergency, a diver breathes from this primary second stage during a dive. 1. Purge Button
The purge button is located on the face of the regulator second stage. The purpose of the purge button is to flood the second stage with air, forcing water out of the second stage.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 The name “second stage” comes from this part's function as the second stage of pressure reduction. It takes the intermediate pressure air from the regulator hose and reduces it to ambient pressure-- a pressure equivalent to the air or water pressure surrounding a diver, allowing a diver to breathe from the second stage safely. The primary second stage is one of two second stages attached to a standard open water regulator, and it is this one that a diver normally breathes from during a dive. 3. Alternate Second Stage
The alternate second stage (also known as an alternate air source, buddy regulator, or octopus) does the exact same thing as the primary second stage: it reduces intermediate air pressure supplied by a low-pressure hose to an ambient air pressure that a diver can breathe. The alternate second stage is a back-up, that ordinarily is not used. It enables a diver to share air from his tank with a second diver in case of an out-of-air emergency. Alternate second stages are usually bright colors, such as neon yellow, which allows them to be quickly located. As diver education and safety procedures have evolved, alternate second stages have become standard scuba diving safety gear, allowing any diver to breathe from any other diver's tank.

The name “second stage” comes from this part's function as the second stage of pressure reduction. It takes the intermediate pressure air from the regulator hose and reduces it to ambient pressure-- a pressure equivalent to the air or water pressure surrounding a diver, allowing a diver to breathe from the second stage safely. The primary second stage is one of two second stages attached to a standard open water regulator, and it is this one that a diver normally breathes from during a dive. 3. Alternate Second Stage
The alternate second stage (also known as an alternate air source, buddy regulator, or octopus) does the exact same thing as the primary second stage: it reduces intermediate air pressure supplied by a low-pressure hose to an ambient air pressure that a diver can breathe. The alternate second stage is a back-up, that ordinarily is not used. It enables a diver to share air from his tank with a second diver in case of an out-of-air emergency. Alternate second stages are usually bright colors, such as neon yellow, which allows them to be quickly located. As diver education and safety procedures have evolved, alternate second stages have become standard scuba diving safety gear, allowing any diver to breathe from any other diver's tank.

The best scuba regulator - Chicago Tribune The best scuba regulator
The best scuba regulator
How scuba regulators work
Considerations when choosing scuba regulators
Price
FAQ
Q. Do I need to buy first- and second-stage regulators from the same company?
Q. Do my regulators need regular maintenance?
Scuba regulators we recommend
 Experienced divers will often mix and match equipment. However, if you're relatively new to scuba diving, getting both from the same source guarantees they'll work well together — something that can be a challenge if you buy separately. Q. Do my regulators need regular maintenance? A. Yes. The manufacturer will give instructions, including a recommended service interval (dive centers will usually do this for you). The most important task is to rinse your regulators in clean, fresh water after every dive. Although designed to work in salt water, it will still corrode them if not washed out. Leave to dry naturally, out of the sun. Scuba regulators we recommend
Best of the best: Scubapro MK25 EVO/A700 Diving Regulator System
Our take:

Experienced divers will often mix and match equipment. However, if you're relatively new to scuba diving, getting both from the same source guarantees they'll work well together — something that can be a challenge if you buy separately. Q. Do my regulators need regular maintenance? A. Yes. The manufacturer will give instructions, including a recommended service interval (dive centers will usually do this for you). The most important task is to rinse your regulators in clean, fresh water after every dive. Although designed to work in salt water, it will still corrode them if not washed out. Leave to dry naturally, out of the sun. Scuba regulators we recommend
Best of the best: Scubapro MK25 EVO/A700 Diving Regulator System
Our take:

The best scuba regulator - Chicago Tribune The best scuba regulator
The best scuba regulator
How scuba regulators work
Considerations when choosing scuba regulators
Price
FAQ
Q. Do I need to buy first- and second-stage regulators from the same company?
Q. Do my regulators need regular maintenance?
Scuba regulators we recommend
 Diaphragms are more complicated but are actually cheaper to make. They’re often preferred for cold waters. Piston models are more expensive because although simpler they need to be made with greater precision. Piston regulators can handle higher air flow than those with a diaphragm. It can be important for professionals, though makes little difference to most leisure divers. The downside is that they’re slightly more likely to free-flow in cold water (a situation where pressure control is lost). Regulators are also described as balanced or unbalanced. A balanced regulator will always try to maintain an even pressure, regardless of body position in the water, how full the tanks are, or the difference in depth. Unbalanced regulators don’t do this, so it’s possible to experience difficulty breathing at times. However, effects are moderate at depths less than 100 feet, and beginners don’t generally go beyond about 60 feet.

Diaphragms are more complicated but are actually cheaper to make. They’re often preferred for cold waters. Piston models are more expensive because although simpler they need to be made with greater precision. Piston regulators can handle higher air flow than those with a diaphragm. It can be important for professionals, though makes little difference to most leisure divers. The downside is that they’re slightly more likely to free-flow in cold water (a situation where pressure control is lost). Regulators are also described as balanced or unbalanced. A balanced regulator will always try to maintain an even pressure, regardless of body position in the water, how full the tanks are, or the difference in depth. Unbalanced regulators don’t do this, so it’s possible to experience difficulty breathing at times. However, effects are moderate at depths less than 100 feet, and beginners don’t generally go beyond about 60 feet.

Description of Scuba Diving Regulator Parts The Five Basic Parts of a Scuba Diving Regulator
The Five Basic Parts of a Scuba Diving Regulator
Basics parts of Open Water Scuba Diving Regulator
First Stage
Primary Second Stage
Alternate Second Stage
Low-Pressure Inflator Hose
Submersible Pressure Gauge and Console
Watch Now: Post-Dive Regulator Care in Scubing Diving
 A diver should check to make sure that his mouthpiece is secured to the regulator second stage with a zip tie or cable tie to ensure that it does not slide off during a dive. 04
of 06
Alternate Second Stage
Natalie L Gibb
An alternate second stage (also called an alternate air source, buddy regulator, or octopus) does exactly the same thing as a primary second stage. The alternate second stage is not intended to be used except in the case of an out-of-air emergency. A diver with an alternate second stage can allow an out-of-air diver to breathe from his tank without putting himself at risk. 1. Mouthpiece

A diver should check to make sure that his mouthpiece is secured to the regulator second stage with a zip tie or cable tie to ensure that it does not slide off during a dive. 04
of 06
Alternate Second Stage
Natalie L Gibb
An alternate second stage (also called an alternate air source, buddy regulator, or octopus) does exactly the same thing as a primary second stage. The alternate second stage is not intended to be used except in the case of an out-of-air emergency. A diver with an alternate second stage can allow an out-of-air diver to breathe from his tank without putting himself at risk. 1. Mouthpiece

How a Scuba Diving Regulator Works - AquaViews - Leisure Pro How a Scuba Diving Regulator Works
How a Scuba Diving Regulator Works
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March 29, 2019 diving equipment Diving gear diving regulators regulators scuba diving gear
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When learning about diving, you are shown the diving equipment and how to use it. But often left unexplained is exactly how each component in your dive kit works. This knowledge comes in handy when you are looking to buy your own dive gear since they can be quite expensive. After all, you’d always want to choose the right one that will suit your needs. And in this article, we aim to help you understand one of the most important pieces of your scuba equipment —your scuba regulator. What is a Scuba Diving Regulator? A scuba regulator is literally the lifeline between you and your air source while diving. It is the most important and key piece of any diver’s equipment as it connects to the gas cylinder (or tank) and allows the diver to breathe air from the tank. Together, the regulator and tank make up a self-contained underwater breathing apparatus (SCUBA), which is what makes breathing possible underwater.

Scuba Diving O-Rings - The Scuba Doctor Scuba Diving O-Rings
Scuba Diving O-Rings
Information You Need to Know When Buying Scuba O-Rings
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O-Ring Colour:
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Tech Tip:
SCUBA Regulator DIN Connector O-ring Sizes
O-rings Available from The Scuba Doctor
Scuba O-Ring Application Guide
 Never use silicone grease. This is especially to be avoided if you are using a nitrox mix (a combination of nitrogen and oxygen). Silicone reacts with oxygen. Avoid using anything other than your finger or the back eraser end of a pencil to seat the O-ring. Make sure the new o-ring you just put in doesn't have any nicks, cuts or stretch marks on it. If it does, replace it with a new one again. Test the new O-ring, by attaching the first stage of your regulator like you would normally do. Slowly open the cylinder valve to pressurize the regulator. If you hear a loud pop or clap and air hissing out, the O-ring is not properly seated. Go back to the beginning and try again.

Scuba Diving O-Rings - The Scuba Doctor

Scuba Diving O-Rings
Scuba Diving O-Rings
Information You Need to Know When Buying Scuba O-Rings
O-Ring Sizing
O-Ring Materials
O-Ring Hardness
O-Ring Colour:
How to Replace Your Cylinder/Tank Valve O-ring
Apeks O-rings
Scubapro O-Rings
Tech Tip:
SCUBA Regulator DIN Connector O-ring Sizes
O-rings Available from The Scuba Doctor
Scuba O-Ring Application Guide

Never use silicone grease. This is especially to be avoided if you are using a nitrox mix (a combination of nitrogen and oxygen). Silicone reacts with oxygen. Avoid using anything other than your finger or the back eraser end of a pencil to seat the O-ring. Make sure the new o-ring you just put in doesn't have any nicks, cuts or stretch marks on it. If it does, replace it with a new one again. Test the new O-ring, by attaching the first stage of your regulator like you would normally do. Slowly open the cylinder valve to pressurize the regulator. If you hear a loud pop or clap and air hissing out, the O-ring is not properly seated. Go back to the beginning and try again.

Regulator Features - The Scuba Doctor Regulator Features
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 Regulator Features - The Scuba Doctor
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Home / Shop Advice / Trusted Scuba Advice / Regulator Features
Regulator Features
Advice on choosing the right scuba regulator for you. Choosing a scuba dicing regulator can seem a daunting task. First comes the shock that the price of the typical regulator set does not include the octopus, gauges and BCD inflator hose that was always included in the rented and school equipment you have been using. A typical regulator set comprises the first stage regulator with one second stage regulator. However, modern regulators all come up to a very high minimum standard so whichever you decide to purchase, you are unlikely to be disappointed. For a large range of Regulator and Octopus options for all conditions visit the Regulators section in the The Scuba Doctor Online Dive Shop. For a large range of Instrument options for all conditions visit the Instruments section in the The Scuba Doctor Online Dive Shop. General Scuba Regulator Guidelines
The basic rule of thumb with selecting a diving regulator is to go for the most expensive you can afford that is most suited to the diving you will be doing. The more you spend the easier it will be to breathe from.

Regulator Features - The Scuba Doctor

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke
 Step 3 - Bleed the Air
Remove/bleed air from the tank. Leave only up to 10 lbs of air inside the cylinder. Step 4 - Check for Loose Objects
Listen for sounds from water and other loose objects inside the tank. Damaged and flooded tanks should be discarded. Step 5 - Place the Tank in Cool Water
The cylinder should be placed in a tank with cool water to ensure the air is not expanded due to high temperature. This can also help point out cracks in tanks that look fine outwardly. Step 6 - Inspect Filters and Gauges
The air compressor should be checked to see if it is in perfect working condition. The filters and gauges should be inspected. Step 7 - Set up the Compressor
The air compressor needs to be set up to shut down automatically at the specified rating for the cylinder in use. Step 8 - Attach the Yoke
The yoke of the compressor and the valve of the tank should be wiped clean.

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com

How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke

Step 3 - Bleed the Air
Remove/bleed air from the tank. Leave only up to 10 lbs of air inside the cylinder. Step 4 - Check for Loose Objects
Listen for sounds from water and other loose objects inside the tank. Damaged and flooded tanks should be discarded. Step 5 - Place the Tank in Cool Water
The cylinder should be placed in a tank with cool water to ensure the air is not expanded due to high temperature. This can also help point out cracks in tanks that look fine outwardly. Step 6 - Inspect Filters and Gauges
The air compressor should be checked to see if it is in perfect working condition. The filters and gauges should be inspected. Step 7 - Set up the Compressor
The air compressor needs to be set up to shut down automatically at the specified rating for the cylinder in use. Step 8 - Attach the Yoke
The yoke of the compressor and the valve of the tank should be wiped clean.

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke
 This can also help point out cracks in tanks that look fine outwardly. Step 6 - Inspect Filters and Gauges
The air compressor should be checked to see if it is in perfect working condition. The filters and gauges should be inspected. Step 7 - Set up the Compressor
The air compressor needs to be set up to shut down automatically at the specified rating for the cylinder in use. Step 8 - Attach the Yoke
The yoke of the compressor and the valve of the tank should be wiped clean. The yoke should be attached to the tank. Step 9 - Fill the Cylinder
The cylinder valve should be opened completely and the compressor will start filling the cylinder. Step 10 - Shut Down the Compressor and Disengage Yoke
The automatic shut down should be monitored meticulously and if it does not shut off automatically, it should be manually shut. Leaving the cylinder unattended can be dangerous. After the air is released, the yoke can be disengaged from the tank.

This can also help point out cracks in tanks that look fine outwardly. Step 6 - Inspect Filters and Gauges
The air compressor should be checked to see if it is in perfect working condition. The filters and gauges should be inspected. Step 7 - Set up the Compressor
The air compressor needs to be set up to shut down automatically at the specified rating for the cylinder in use. Step 8 - Attach the Yoke
The yoke of the compressor and the valve of the tank should be wiped clean. The yoke should be attached to the tank. Step 9 - Fill the Cylinder
The cylinder valve should be opened completely and the compressor will start filling the cylinder. Step 10 - Shut Down the Compressor and Disengage Yoke
The automatic shut down should be monitored meticulously and if it does not shut off automatically, it should be manually shut. Leaving the cylinder unattended can be dangerous. After the air is released, the yoke can be disengaged from the tank.

How to Safely Refill a Scuba Tank | Max-Air How to Safely Refill a Scuba Tank
How to Safely Refill a Scuba Tank
1. Check Tank Compliance
2. Release Extra Air
3. Check For Damage or Loose Objects
4. Give the Tank a Cold Bath
5. Set Up the Compressor
6. Attach the Yoke to the Scuba Tank
7. Fill the Tank
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 Set Up the Compressor
Your compressor needs to be configured specifically for the tank you’re filling up so check all of the requisite gauges and meters, and make sure everything looks correct. Make sure the automatic shut-off is also working. 6. Attach the Yoke to the Scuba Tank
Here, all you have to do is attach the compressor’s yoke to the tank’s valve. Make sure the connecting points of both components are clear of dirt and debris. You don’t want to be sucking in bad air once the tank is ready. 7. Fill the Tank
Turn the compressor on and let it fill up the tank. Monitor the gauges and make sure the automatic shut-off mechanism on the compressor is still working. If it malfunctions, you’ll have to turn off the compressor yourself.

How to Safely Refill a Scuba Tank | Max-Air

How to Safely Refill a Scuba Tank
How to Safely Refill a Scuba Tank
1. Check Tank Compliance
2. Release Extra Air
3. Check For Damage or Loose Objects
4. Give the Tank a Cold Bath
5. Set Up the Compressor
6. Attach the Yoke to the Scuba Tank
7. Fill the Tank
Need an Air Compressor?
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Set Up the Compressor
Your compressor needs to be configured specifically for the tank you’re filling up so check all of the requisite gauges and meters, and make sure everything looks correct. Make sure the automatic shut-off is also working. 6. Attach the Yoke to the Scuba Tank
Here, all you have to do is attach the compressor’s yoke to the tank’s valve. Make sure the connecting points of both components are clear of dirt and debris. You don’t want to be sucking in bad air once the tank is ready. 7. Fill the Tank
Turn the compressor on and let it fill up the tank. Monitor the gauges and make sure the automatic shut-off mechanism on the compressor is still working. If it malfunctions, you’ll have to turn off the compressor yourself.

Scuba Diving Regulators Scuba Diving Regulators
Scuba Diving Regulators
Mares Loop 15X Regulator and Octopus Kit
Cressi XS Compact AC2 Regulator
Oceanic Alpha 10 + sPX DIN Regulator
OMS Airstream Evoque Regulator with Flex Hose
Mares Prestige 15X Regulator
Atomic Color Kit for B2 Regulator
Scubapro MK25 EVO/S600 Regulator
Scuba Regulator & Octo Grab Bag
Cressi Compact MC9 Regulator
Atomic Aquatics M1 Regulator, DIN
Cressi AC25M Master Cromo Regulator
Sherwood SR2 Regulator
Oceanic ZEO Swivel Regulator
Mares Rover 2S Regulator
Zeagle F8 Yoke Regulator
Aqua Lung Leg3nd Elite Regulator ~ New 2020
Scuba Diving Regulators Buying Guide
Top of the Line Scuba Regulators
Recreational Scuba Regulators
Economical Scuba Regulators
DIN Scuba Regulators
Scuba Regulator Accessories
 If a metal brace has to go over the tank valve, and the brace screwed down to clamp the first stage, then you have a Yoke valve. DIN valve/regulator connections are more streamlined than Yoke connections, requiring less outside hardware to attach. A DIN valve and regulator can also handle higher pressures when configured correctly, and may be the ideal solution for technical and professional divers. Scuba Regulator Accessories
Find items to protect, maintain, and repair your regulator right here. Padded regulator bags will keep your most important components safe during travel, serving as a low-cost insurance policy for a high-cost piece of gear. Lubricant will keep the parts of your regulator, 1st and 2nd stage, safe from grinding and wear-and-tear. You can get braided regulator hoses for extra durability, spare 1st or 2nd stages for any market regulator, and even dedicated toolkits to make certain you don't have to put a dive on hold for a broken part. Filter
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The best scuba regulator - Chicago Tribune The best scuba regulator
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 Entry-level stage one and two combos start at around $150, but you’ll probably want to upgrade to a more flexible system once you gain some experience. You’ll likely spend anywhere from $200 to $700. Advanced divers looking for the very best scuba regulators will pay $800 and up. FAQ
Q. Do I need to buy first- and second-stage regulators from the same company? A. No. Experienced divers will often mix and match equipment. However, if you're relatively new to scuba diving, getting both from the same source guarantees they'll work well together — something that can be a challenge if you buy separately. Q. Do my regulators need regular maintenance? A. Yes. The manufacturer will give instructions, including a recommended service interval (dive centers will usually do this for you).

Entry-level stage one and two combos start at around $150, but you’ll probably want to upgrade to a more flexible system once you gain some experience. You’ll likely spend anywhere from $200 to $700. Advanced divers looking for the very best scuba regulators will pay $800 and up. FAQ
Q. Do I need to buy first- and second-stage regulators from the same company? A. No. Experienced divers will often mix and match equipment. However, if you're relatively new to scuba diving, getting both from the same source guarantees they'll work well together — something that can be a challenge if you buy separately. Q. Do my regulators need regular maintenance? A. Yes. The manufacturer will give instructions, including a recommended service interval (dive centers will usually do this for you).

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke
 While not in use, the tanks/cylinders should be kept filled with around 250 lbs of air to avoid any moisture from seeping in. Step 1 - Obtain Certification
Obtain a valid certification and expertise before filling any cylinders. Professional scuba inspector certification from DOT or OSHA or any other equivalent certification is necessary. Step 2 - Check Tank Compliance
No out of compliance tanks should be filled. The hydrostatic testing dates should be thoroughly checked. Step 3 - Bleed the Air
Remove/bleed air from the tank. Leave only up to 10 lbs of air inside the cylinder. Step 4 - Check for Loose Objects
Listen for sounds from water and other loose objects inside the tank. Damaged and flooded tanks should be discarded. Step 5 - Place the Tank in Cool Water
The cylinder should be placed in a tank with cool water to ensure the air is not expanded due to high temperature.

While not in use, the tanks/cylinders should be kept filled with around 250 lbs of air to avoid any moisture from seeping in. Step 1 - Obtain Certification
Obtain a valid certification and expertise before filling any cylinders. Professional scuba inspector certification from DOT or OSHA or any other equivalent certification is necessary. Step 2 - Check Tank Compliance
No out of compliance tanks should be filled. The hydrostatic testing dates should be thoroughly checked. Step 3 - Bleed the Air
Remove/bleed air from the tank. Leave only up to 10 lbs of air inside the cylinder. Step 4 - Check for Loose Objects
Listen for sounds from water and other loose objects inside the tank. Damaged and flooded tanks should be discarded. Step 5 - Place the Tank in Cool Water
The cylinder should be placed in a tank with cool water to ensure the air is not expanded due to high temperature.

How Scuba Works | HowStuffWorks How Scuba Works
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Wet Suits, Dry Suits, and Buoyancy Control
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Diving Physics, Physiology and Hazards
Effects of Scuba Diving on the Body
Scuba: Additional Equipment
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Amateur levels
 Because the regulator is one of the most important pieces of equipment, many divers choose to purchase their own regulators (instead of rent) so that they can be confident that the regulator is in good working order and has been properly maintained. The final parts of the breathing apparatus are accessories that contain emergency or alternate air supplies. They include the following: Pony tanks - These are smaller cylinders that strap onto the main cylinder. Pony tanks contain air and have their own regulators. They provide enough air for many emergency situations, such as an ascent from a fairly deep depth. Spare air unit - The spare air unit has the regulator built directly into the on/off valve. It is lightweight and can be carried in the pocket of a BCD. It is designed to provide only enough air to allow you to ascend from

How Scuba Works | HowStuffWorks

Because the regulator is one of the most important pieces of equipment, many divers choose to purchase their own regulators (instead of rent) so that they can be confident that the regulator is in good working order and has been properly maintained. The final parts of the breathing apparatus are accessories that contain emergency or alternate air supplies. They include the following: Pony tanks - These are smaller cylinders that strap onto the main cylinder. Pony tanks contain air and have their own regulators. They provide enough air for many emergency situations, such as an ascent from a fairly deep depth. Spare air unit - The spare air unit has the regulator built directly into the on/off valve. It is lightweight and can be carried in the pocket of a BCD. It is designed to provide only enough air to allow you to ascend from

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke
 The yoke should be attached to the tank. Step 9 - Fill the Cylinder
The cylinder valve should be opened completely and the compressor will start filling the cylinder. Step 10 - Shut Down the Compressor and Disengage Yoke
The automatic shut down should be monitored meticulously and if it does not shut off automatically, it should be manually shut. Leaving the cylinder unattended can be dangerous. After the air is released, the yoke can be disengaged from the tank. Recreation

The yoke should be attached to the tank. Step 9 - Fill the Cylinder
The cylinder valve should be opened completely and the compressor will start filling the cylinder. Step 10 - Shut Down the Compressor and Disengage Yoke
The automatic shut down should be monitored meticulously and if it does not shut off automatically, it should be manually shut. Leaving the cylinder unattended can be dangerous. After the air is released, the yoke can be disengaged from the tank. Recreation

Scuba Diving Regulators Scuba Diving Regulators
Scuba Diving Regulators
Mares Loop 15X Regulator and Octopus Kit
Cressi XS Compact AC2 Regulator
Oceanic Alpha 10 + sPX DIN Regulator
OMS Airstream Evoque Regulator with Flex Hose
Mares Prestige 15X Regulator
Atomic Color Kit for B2 Regulator
Scubapro MK25 EVO/S600 Regulator
Scuba Regulator & Octo Grab Bag
Cressi Compact MC9 Regulator
Atomic Aquatics M1 Regulator, DIN
Cressi AC25M Master Cromo Regulator
Sherwood SR2 Regulator
Oceanic ZEO Swivel Regulator
Mares Rover 2S Regulator
Zeagle F8 Yoke Regulator
Aqua Lung Leg3nd Elite Regulator ~ New 2020
Scuba Diving Regulators Buying Guide
Top of the Line Scuba Regulators
Recreational Scuba Regulators
Economical Scuba Regulators
DIN Scuba Regulators
Scuba Regulator Accessories
 Top of the Line Scuba Regulators
Preferred by expert and professional divers, a Top of the Line Scuba Regulator is constructed with bleeding edge innovations and materials. Many feature low-maintenance titanium components, many of which will never rust or corrode in any way. Top of the line scuba regulators usually come with a balanced 1st and 2nd stage, too, which provides superior breathing performance, even at greater depth and lower pressure. Known for their comfort-conscious design philosophy, Top of the Line Scuba Regulator manufacturers give special attention to concerns like mouthpiece comfort and jaw fatigue. Recreational Scuba Regulators
Recreational scuba regulators provide you with a quality piece of equipment at a reasonable price. With a Recreational regulator, you won't be missing important features. Like all high-quality regulators, Recreational Scuba Regulators often come with a diver adjustable venturi effect. This is a system that takes advantage of constriction to make air particles move faster, which creates a vacuum effect that makes breathing from your regulator that much easier. Economical Scuba Regulators
Never let a budget get in your way with our Economical Scuba Regulators. Safe and reliable regulators at an unbeatable cost, an economy regulator can get you out of your routine and into the ocean without breaking your wallet.

Scuba Diving Regulators

Top of the Line Scuba Regulators
Preferred by expert and professional divers, a Top of the Line Scuba Regulator is constructed with bleeding edge innovations and materials. Many feature low-maintenance titanium components, many of which will never rust or corrode in any way. Top of the line scuba regulators usually come with a balanced 1st and 2nd stage, too, which provides superior breathing performance, even at greater depth and lower pressure. Known for their comfort-conscious design philosophy, Top of the Line Scuba Regulator manufacturers give special attention to concerns like mouthpiece comfort and jaw fatigue. Recreational Scuba Regulators
Recreational scuba regulators provide you with a quality piece of equipment at a reasonable price. With a Recreational regulator, you won't be missing important features. Like all high-quality regulators, Recreational Scuba Regulators often come with a diver adjustable venturi effect. This is a system that takes advantage of constriction to make air particles move faster, which creates a vacuum effect that makes breathing from your regulator that much easier. Economical Scuba Regulators
Never let a budget get in your way with our Economical Scuba Regulators. Safe and reliable regulators at an unbeatable cost, an economy regulator can get you out of your routine and into the ocean without breaking your wallet.

Scuba set - Wikipedia Scuba set
Scuba set
Contents
Etymology
Application
Alternatives to scuba for diving
Operation
History
Types
Open-circuit
Constant flow scuba
Open circuit demand scuba
Twin-hose demand regulator
Single-hose regulator
Secondary demand valve on a regulator
Cryogenic
Rebreathers
Breathing gases for scuba
Diving cylinders
Harness configuration
Harness construction
Basic harness
Backplate or backpack harness
Cam bands
Tank bands
Sidemount harness
Accessories
Gas endurance of a scuba set
Open circuit
Semi-closed rebreather
Closed circuit rebreathers
Hazards and safety
See also
References
Bibliography
External images
 Scuba is overwhelmingly the most common underwater breathing system used by recreational divers and is also used in professional diving when it provides advantages, usually of mobility and range, over surface supplied diving systems, and is allowed by the relevant code of practice. Two basic functional systems of scuba are in general use: open-circuit-demand, and rebreather. In open-circuit demand scuba, the diver expels exhaled air to the environment, and requires each breath be delivered on demand by a diving regulator, which reduces the pressure from the storage cylinder. The breathing air is supplied through a demand valve when the diver reduces the pressure in the demand valve during inhalation. In rebreather scuba, the system recycles the exhaled gas, removes carbon dioxide, and compensates for the used oxygen before the diver is supplied with gas from the breathing circuit. The amount of gas lost from the circuit during each breathing cycle depends on the design of the rebreather and depth change during the breathing cycle. Gas in the breathing circuit is at ambient pressure, and stored gas is provided through regulators or injectors, depending on design. Within these systems, various mounting configurations may be used to carry the scuba set, depending on application and preference. These include:

Scuba set - Wikipedia

Scuba set
Scuba set
Contents
Etymology
Application
Alternatives to scuba for diving
Operation
History
Types
Open-circuit
Constant flow scuba
Open circuit demand scuba
Twin-hose demand regulator
Single-hose regulator
Secondary demand valve on a regulator
Cryogenic
Rebreathers
Breathing gases for scuba
Diving cylinders
Harness configuration
Harness construction
Basic harness
Backplate or backpack harness
Cam bands
Tank bands
Sidemount harness
Accessories
Gas endurance of a scuba set
Open circuit
Semi-closed rebreather
Closed circuit rebreathers
Hazards and safety
See also
References
Bibliography
External images

Scuba is overwhelmingly the most common underwater breathing system used by recreational divers and is also used in professional diving when it provides advantages, usually of mobility and range, over surface supplied diving systems, and is allowed by the relevant code of practice. Two basic functional systems of scuba are in general use: open-circuit-demand, and rebreather. In open-circuit demand scuba, the diver expels exhaled air to the environment, and requires each breath be delivered on demand by a diving regulator, which reduces the pressure from the storage cylinder. The breathing air is supplied through a demand valve when the diver reduces the pressure in the demand valve during inhalation. In rebreather scuba, the system recycles the exhaled gas, removes carbon dioxide, and compensates for the used oxygen before the diver is supplied with gas from the breathing circuit. The amount of gas lost from the circuit during each breathing cycle depends on the design of the rebreather and depth change during the breathing cycle. Gas in the breathing circuit is at ambient pressure, and stored gas is provided through regulators or injectors, depending on design. Within these systems, various mounting configurations may be used to carry the scuba set, depending on application and preference. These include:

 Let’s go through a simple step by step process on how to set up CO2 for your aquarium; Co2 Diffuser Setup
Use your spanner to connect the regulator to the CO2 bottle. Attach the solenoid to the regulator. Using the CO2 tubing, attach the solenoid to the bubble counter. Using the tubing, attach the bubble counter to the diffuser. Mount the diffuser in your tank near the bottom. Plug in the solenoid and set the timer in order for precise CO2 release. When you have everything put together, open the needle valve a little bit on the regulator before opening the bottle to release has. This will help avoid certain components from being damaged. Now it is time to switch on the main valve on the CO2 bottle in order to release the CO2.

Let’s go through a simple step by step process on how to set up CO2 for your aquarium; Co2 Diffuser Setup
Use your spanner to connect the regulator to the CO2 bottle. Attach the solenoid to the regulator. Using the CO2 tubing, attach the solenoid to the bubble counter. Using the tubing, attach the bubble counter to the diffuser. Mount the diffuser in your tank near the bottom. Plug in the solenoid and set the timer in order for precise CO2 release. When you have everything put together, open the needle valve a little bit on the regulator before opening the bottle to release has. This will help avoid certain components from being damaged. Now it is time to switch on the main valve on the CO2 bottle in order to release the CO2.

The Best Scuba Regulators for 2021 - Art of Scuba Diving The Best Scuba Regulators for 2021
The Best Scuba Regulators for 2021
Ultimate SCUBA Regulator Guide Index
Quick Answer: The Best SCUBA Regulators
SCUBA Regulator Overview
Aqua Lung Legend LUX Supreme
Aqua Lung Mikron
Apeks Flight
Zeagle F8
Mares Abyss 22 Navy II
Before Buying a SCUBA Regulator
YOUR BUDGET
HOW OFTEN WILL YOU DIVE?
The Full List of SCUBA Regulator for 2020
Aqua Lung Legend LUX Supreme
Aqua Lung Mikron
Apeks Flight
Zeagle F8
Mares Abyss 22 Navy II
Sherwood SR2
Cressi T10-SC Cromo Master
Scubapro MK25
Atomic Aquatics B2 W/ Swivel
What Gear do I Use?
More Gear Guides
 CHECK AMAZON
BEST SCUBA REGULATORS
Mares Abyss 22 Navy II
HIGHLIGHTS: In true Mares style, this great SCUBA regulator is built for any condition, specifically for under-ice dives. CHECK AMAZON
NOTE: Most of the regulators above only come with the second and first stages and the conecting hose. If thats the case, then you will still need the air gauge and hose, and a octopus and hose. Maybe a fancy guage like THIS ONE from Suunto or something simple like THIS ONE. Pay attention whether you want BAR or PSI on your gauge. If you want, you can even get wireless air that transmits to your dive computer. A good octopus would be something LIKE THIS. Before Buying a SCUBA Regulator
Still not sure what one to go with, with so many great options?

The Best Scuba Regulators for 2021 - Art of Scuba Diving

The Best Scuba Regulators for 2021
The Best Scuba Regulators for 2021
Ultimate SCUBA Regulator Guide Index
Quick Answer: The Best SCUBA Regulators
SCUBA Regulator Overview
Aqua Lung Legend LUX Supreme
Aqua Lung Mikron
Apeks Flight
Zeagle F8
Mares Abyss 22 Navy II
Before Buying a SCUBA Regulator
YOUR BUDGET
HOW OFTEN WILL YOU DIVE?
The Full List of SCUBA Regulator for 2020
Aqua Lung Legend LUX Supreme
Aqua Lung Mikron
Apeks Flight
Zeagle F8
Mares Abyss 22 Navy II
Sherwood SR2
Cressi T10-SC Cromo Master
Scubapro MK25
Atomic Aquatics B2 W/ Swivel
What Gear do I Use?
More Gear Guides

CHECK AMAZON
BEST SCUBA REGULATORS
Mares Abyss 22 Navy II
HIGHLIGHTS: In true Mares style, this great SCUBA regulator is built for any condition, specifically for under-ice dives. CHECK AMAZON
NOTE: Most of the regulators above only come with the second and first stages and the conecting hose. If thats the case, then you will still need the air gauge and hose, and a octopus and hose. Maybe a fancy guage like THIS ONE from Suunto or something simple like THIS ONE. Pay attention whether you want BAR or PSI on your gauge. If you want, you can even get wireless air that transmits to your dive computer. A good octopus would be something LIKE THIS. Before Buying a SCUBA Regulator
Still not sure what one to go with, with so many great options?

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke
 Smaller cylinders are also available for different purposes. Before filling a scuba tank, its rating should be known and the safety procedure should be followed, as cylinder explosions can cause fatalities. Safety precautions prescribed by the department of transportation should be strictly adhered to. Any cracks in the tank can compromise with the structural safety of the cylinder. The valve should be in a working condition and the insides of the tank should be checked for any corrosion, which might lead to failure of the cylinder. While not in use, the tanks/cylinders should be kept filled with around 250 lbs of air to avoid any moisture from seeping in. Step 1 - Obtain Certification
Obtain a valid certification and expertise before filling any cylinders. Professional scuba inspector certification from DOT or OSHA or any other equivalent certification is necessary. Step 2 - Check Tank Compliance
No out of compliance tanks should be filled. The hydrostatic testing dates should be thoroughly checked.

Smaller cylinders are also available for different purposes. Before filling a scuba tank, its rating should be known and the safety procedure should be followed, as cylinder explosions can cause fatalities. Safety precautions prescribed by the department of transportation should be strictly adhered to. Any cracks in the tank can compromise with the structural safety of the cylinder. The valve should be in a working condition and the insides of the tank should be checked for any corrosion, which might lead to failure of the cylinder. While not in use, the tanks/cylinders should be kept filled with around 250 lbs of air to avoid any moisture from seeping in. Step 1 - Obtain Certification
Obtain a valid certification and expertise before filling any cylinders. Professional scuba inspector certification from DOT or OSHA or any other equivalent certification is necessary. Step 2 - Check Tank Compliance
No out of compliance tanks should be filled. The hydrostatic testing dates should be thoroughly checked.

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke
 However, if you are still interested in doing it yourself, here’s the information you’ll need. Continue reading below Our Video of the Day
A scuba tank is made of aluminum or steel to hold air under pressure while diving. The cylinders are filled with nitrox, or a mixture of oxygen, nitrogen and helium. Custom air fills like the nitrox and the other mixtures need extra care and expertise to fill. Normally, scuba tanks can take air at a pressure of 3,000 pounds per square inch. Smaller cylinders are also available for different purposes. Before filling a scuba tank, its rating should be known and the safety procedure should be followed, as cylinder explosions can cause fatalities. Safety precautions prescribed by the department of transportation should be strictly adhered to. Any cracks in the tank can compromise with the structural safety of the cylinder. The valve should be in a working condition and the insides of the tank should be checked for any corrosion, which might lead to failure of the cylinder.

However, if you are still interested in doing it yourself, here’s the information you’ll need. Continue reading below Our Video of the Day
A scuba tank is made of aluminum or steel to hold air under pressure while diving. The cylinders are filled with nitrox, or a mixture of oxygen, nitrogen and helium. Custom air fills like the nitrox and the other mixtures need extra care and expertise to fill. Normally, scuba tanks can take air at a pressure of 3,000 pounds per square inch. Smaller cylinders are also available for different purposes. Before filling a scuba tank, its rating should be known and the safety procedure should be followed, as cylinder explosions can cause fatalities. Safety precautions prescribed by the department of transportation should be strictly adhered to. Any cracks in the tank can compromise with the structural safety of the cylinder. The valve should be in a working condition and the insides of the tank should be checked for any corrosion, which might lead to failure of the cylinder.

How to Safely Refill a Scuba Tank | Max-Air How to Safely Refill a Scuba Tank
How to Safely Refill a Scuba Tank
1. Check Tank Compliance
2. Release Extra Air
3. Check For Damage or Loose Objects
4. Give the Tank a Cold Bath
5. Set Up the Compressor
6. Attach the Yoke to the Scuba Tank
7. Fill the Tank
Need an Air Compressor?
Share This Story, Choose Your Platform!
 The first step in this regard is often the refilling of your scuba tank. In this article, we’ll show you how to safely use an air compressor to do just that in 7 simple steps. 1. Check Tank Compliance
Scuba tanks, or any pressurized tank, needs to be regularly inspected. If the tank is too old or hasn’t been tested recently, don’t use it. It could be faulty, which could lead to a disaster while you’re filling it up or while you’re diving. 2. Release Extra Air
If there’s any extra air in the tank, release it. You don’t want to add more air to a tank unless it has under 10 pounds of pressure worth of air in the tank. 3.

The first step in this regard is often the refilling of your scuba tank. In this article, we’ll show you how to safely use an air compressor to do just that in 7 simple steps. 1. Check Tank Compliance
Scuba tanks, or any pressurized tank, needs to be regularly inspected. If the tank is too old or hasn’t been tested recently, don’t use it. It could be faulty, which could lead to a disaster while you’re filling it up or while you’re diving. 2. Release Extra Air
If there’s any extra air in the tank, release it. You don’t want to add more air to a tank unless it has under 10 pounds of pressure worth of air in the tank. 3.

How to Safely Refill a Scuba Tank | Max-Air How to Safely Refill a Scuba Tank
How to Safely Refill a Scuba Tank
1. Check Tank Compliance
2. Release Extra Air
3. Check For Damage or Loose Objects
4. Give the Tank a Cold Bath
5. Set Up the Compressor
6. Attach the Yoke to the Scuba Tank
7. Fill the Tank
Need an Air Compressor?
Share This Story, Choose Your Platform!
 You don’t want to be sucking in bad air once the tank is ready. 7. Fill the Tank
Turn the compressor on and let it fill up the tank. Monitor the gauges and make sure the automatic shut-off mechanism on the compressor is still working. If it malfunctions, you’ll have to turn off the compressor yourself. Need an Air Compressor? With an air compressor, filling up scuba tanks is a walk in the park. Of course, if you don’t have one already, you’ll need to get one. If you run a scuba business, you should check out our air compressor offerings. Having a compressor of your own will allow you to avoid those tank fill-up fees from third parties and save you a ton of money in the long run.

You don’t want to be sucking in bad air once the tank is ready. 7. Fill the Tank
Turn the compressor on and let it fill up the tank. Monitor the gauges and make sure the automatic shut-off mechanism on the compressor is still working. If it malfunctions, you’ll have to turn off the compressor yourself. Need an Air Compressor? With an air compressor, filling up scuba tanks is a walk in the park. Of course, if you don’t have one already, you’ll need to get one. If you run a scuba business, you should check out our air compressor offerings. Having a compressor of your own will allow you to avoid those tank fill-up fees from third parties and save you a ton of money in the long run.

Scuba Diving O-Rings - The Scuba Doctor Scuba Diving O-Rings
Scuba Diving O-Rings
Information You Need to Know When Buying Scuba O-Rings
O-Ring Sizing
O-Ring Materials
O-Ring Hardness
O-Ring Colour:
How to Replace Your Cylinder/Tank Valve O-ring
Apeks O-rings
Scubapro O-Rings
Tech Tip:
SCUBA Regulator DIN Connector O-ring Sizes
O-rings Available from The Scuba Doctor
Scuba O-Ring Application Guide
 If it does, replace it with a new one again. Test the new O-ring, by attaching the first stage of your regulator like you would normally do. Slowly open the cylinder valve to pressurize the regulator. If you hear a loud pop or clap and air hissing out, the O-ring is not properly seated. Go back to the beginning and try again. Trident Brass O-Ring 3 Piece Tool Set
RRP: $81 ,

Scuba Diving O-Rings - The Scuba Doctor

If it does, replace it with a new one again. Test the new O-ring, by attaching the first stage of your regulator like you would normally do. Slowly open the cylinder valve to pressurize the regulator. If you hear a loud pop or clap and air hissing out, the O-ring is not properly seated. Go back to the beginning and try again. Trident Brass O-Ring 3 Piece Tool Set
RRP: $81 ,

How to Repair an Air Pressure Regulator | eHow How to Repair an Air Pressure Regulator
How to Repair an Air Pressure Regulator
Things You'll Need
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Tip
references
 Step 2
Find the nut for the fitting at the bottom of the pressure regulator. Turn the nut counter-clockwise with the wrench. Continue turning the nut until you can remove it by hand. Step 3
Disconnect the pressure regulator from the air compressor. Examine the threads on the connection and see if any Teflon tape is present. Wrap Teflon tape around the threads if there is none present. Advertisement
Step 4
Insert the pressure regulator back into the air compressor. Tighten the nut for the fitting with the wrench. Step 5
Turn the air compressor on and allow it to build pressure in the tank. Check to see if the noise from the pressure regulator is gone by using the air compressor as you normally would.

How to Repair an Air Pressure Regulator | eHow

How to Repair an Air Pressure Regulator
How to Repair an Air Pressure Regulator
Things You'll Need
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
Step 7
Tip
references

Step 2
Find the nut for the fitting at the bottom of the pressure regulator. Turn the nut counter-clockwise with the wrench. Continue turning the nut until you can remove it by hand. Step 3
Disconnect the pressure regulator from the air compressor. Examine the threads on the connection and see if any Teflon tape is present. Wrap Teflon tape around the threads if there is none present. Advertisement
Step 4
Insert the pressure regulator back into the air compressor. Tighten the nut for the fitting with the wrench. Step 5
Turn the air compressor on and allow it to build pressure in the tank. Check to see if the noise from the pressure regulator is gone by using the air compressor as you normally would.

Detailed Step-by-step Instructions on How to Build a Sandblaster - Hobby Zeal Detailed Step-by-step Instructions on How to Build a Sandblaster
Detailed Step-by-step Instructions on How to Build a Sandblaster
Building a Siphon Sandblaster
Things Needed
How to Build a Siphon Sandblaster
Things to Note
Building a Pressure Sandblaster
Things Needed
How to Build a Pressure Sandblaster
Using Sandblasters
Safety Instructions
Like it? Share it!
 Weld the pipes to bottom and sides of the tank. Step 3 : Screw on the mixing valve onto the end of the bottom pipe. Screw a 1″ equal T-connector from the bottom of the mixing valve. Step 4 : Attach a 1″ female 4-way cross pipe fitting to the threaded steel pipe on the top side of the tank. Screw on the pressure gauge on top, the pressure regulator on the side and a safety valve on the bottom. Attach the water separator to the pressure regulator. Step 5 : Screw on a male threaded elbow fitting from the water separator, and a safety valve for regulating the incoming air from the compressor to the other end.

Detailed Step-by-step Instructions on How to Build a Sandblaster - Hobby Zeal

Detailed Step-by-step Instructions on How to Build a Sandblaster
Detailed Step-by-step Instructions on How to Build a Sandblaster
Building a Siphon Sandblaster
Things Needed
How to Build a Siphon Sandblaster
Things to Note
Building a Pressure Sandblaster
Things Needed
How to Build a Pressure Sandblaster
Using Sandblasters
Safety Instructions
Like it? Share it!

Weld the pipes to bottom and sides of the tank. Step 3 : Screw on the mixing valve onto the end of the bottom pipe. Screw a 1″ equal T-connector from the bottom of the mixing valve. Step 4 : Attach a 1″ female 4-way cross pipe fitting to the threaded steel pipe on the top side of the tank. Screw on the pressure gauge on top, the pressure regulator on the side and a safety valve on the bottom. Attach the water separator to the pressure regulator. Step 5 : Screw on a male threaded elbow fitting from the water separator, and a safety valve for regulating the incoming air from the compressor to the other end.

How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com How to Use an Air Compressor to Fill a Scuba Tank
How to Use an Air Compressor to Fill a Scuba Tank
Step 1 - Obtain Certification
Step 2 - Check Tank Compliance
Step 3 - Bleed the Air
Step 4 - Check for Loose Objects
Step 5 - Place the Tank in Cool Water
Step 6 - Inspect Filters and Gauges
Step 7 - Set up the Compressor
Step 8 - Attach the Yoke
Step 9 - Fill the Cylinder
Step 10 - Shut Down the Compressor and Disengage Yoke
 How to Use an Air Compressor to Fill a Scuba Tank | DoItYourself.com
How to Use an Air Compressor to Fill a Scuba Tank
Written by Doityourself Staff
on Apr 23, 2010
To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Reviewed by
Dawn Hammon
on Dec 18, 2018
What You'll Need
Scuba tanks
Air compressor
Old rags
What You'll Need
Scuba tanks
Air compressor
Old rags
Using an air compressor to fill a scuba tank involves expensive equipment and the installation cost is high. It also requires a certain amount of training and expertise to complete the procedure. Around $5000 can be spent in getting the equipment and learning the procedure for filling up the tank so it is a steep investment. The safe and less expensive option is to get the tank filled by professionals. However, if you are still interested in doing it yourself, here’s the information you’ll need. Continue reading below Our Video of the Day
A scuba tank is made of aluminum or steel to hold air under pressure while diving. The cylinders are filled with nitrox, or a mixture of oxygen, nitrogen and helium. Custom air fills like the nitrox and the other mixtures need extra care and expertise to fill. Normally, scuba tanks can take air at a pressure of 3,000 pounds per square inch.

Detailed Step-by-step Instructions on How to Build a Sandblaster - Hobby Zeal Detailed Step-by-step Instructions on How to Build a Sandblaster
Detailed Step-by-step Instructions on How to Build a Sandblaster
Building a Siphon Sandblaster
Things Needed
How to Build a Siphon Sandblaster
Things to Note
Building a Pressure Sandblaster
Things Needed
How to Build a Pressure Sandblaster
Using Sandblasters
Safety Instructions
Like it? Share it!
 Attach a 1″ female 4-way cross pipe fitting to the threaded steel pipe on the top side of the tank. Screw on the pressure gauge on top, the pressure regulator on the side and a safety valve on the bottom. Attach the water separator to the pressure regulator. Step 5 : Screw on a male threaded elbow fitting from the water separator, and a safety valve for regulating the incoming air from the compressor to the other end. Attach the pipe from the air compressor to the safety valve. Step 6 : Screw on a 1″ male threaded pipe from the bottom of the safety valve that is attached to the 4-way fitting. Cut it off right at the base off the propane tank, and screw on a female elbow fitting at the end. Measure and cut a small section of pipe, and attach it to the T-connector.

Attach a 1″ female 4-way cross pipe fitting to the threaded steel pipe on the top side of the tank. Screw on the pressure gauge on top, the pressure regulator on the side and a safety valve on the bottom. Attach the water separator to the pressure regulator. Step 5 : Screw on a male threaded elbow fitting from the water separator, and a safety valve for regulating the incoming air from the compressor to the other end. Attach the pipe from the air compressor to the safety valve. Step 6 : Screw on a 1″ male threaded pipe from the bottom of the safety valve that is attached to the 4-way fitting. Cut it off right at the base off the propane tank, and screw on a female elbow fitting at the end. Measure and cut a small section of pipe, and attach it to the T-connector.

How to make a water separator for air compressors? | Understanding Air Compressors How to make a water separator for air compressors?
How to make a water separator for air compressors?
How to make a water separator for air compressors?
Three Best Water Separators for Air Compressors
How Compressed Air Filters Work
How to make a water separator for air compressors
Here is what you’ll need for this DIY.
Here is how to make the water separator once you’ve got everything you need.
 As such, one of the joints will be attached to a single pipe. Before hooking up any other equipment, solder the joints using your propane torch and solder to ensure the pipes don’t leak. For that, you’ll need to heat the pipes on the joints and melt the solder on top once it’s hot enough or when the flame on the side turns green. The solder will be sucked inside the tiny seam if the pipe is hot enough. Fix the three male adapters (3/4” -1/2”) on each outlet at the bottom and solder to avoid leaks. Add the threaded 1/2” ball valves below the male adapters. That’s why you need some Teflon tape. Cut the remaining 72-inch copper pipe into two halves and fix on each side of the set-up. One side will be attached to the brass street elbow to go to the regulator, while the other side attaches to the compressed air hose from your compressor. Once you’re done, your setup should look similar to the diagram below.

How to make a water separator for air compressors? | Understanding Air Compressors

How to make a water separator for air compressors?
How to make a water separator for air compressors?
How to make a water separator for air compressors?
Three Best Water Separators for Air Compressors
How Compressed Air Filters Work
How to make a water separator for air compressors
Here is what you’ll need for this DIY.
Here is how to make the water separator once you’ve got everything you need.

As such, one of the joints will be attached to a single pipe. Before hooking up any other equipment, solder the joints using your propane torch and solder to ensure the pipes don’t leak. For that, you’ll need to heat the pipes on the joints and melt the solder on top once it’s hot enough or when the flame on the side turns green. The solder will be sucked inside the tiny seam if the pipe is hot enough. Fix the three male adapters (3/4” -1/2”) on each outlet at the bottom and solder to avoid leaks. Add the threaded 1/2” ball valves below the male adapters. That’s why you need some Teflon tape. Cut the remaining 72-inch copper pipe into two halves and fix on each side of the set-up. One side will be attached to the brass street elbow to go to the regulator, while the other side attaches to the compressed air hose from your compressor. Once you’re done, your setup should look similar to the diagram below.

How to Fill a Scuba Tank the Right Way: Complete Guide – AquaSportsPlanet How to Fill a Scuba Tank the Right Way: Complete Guide
How to Fill a Scuba Tank the Right Way: Complete Guide
These are the steps to filling a scuba tank the right way:
Can You Fill Your Own Scuba Tank?
Steps to Filling a Scuba Tank the Right Way
1. Tank Inspection
These are the different steps you should take to check your tank for damage or wear:
Checklist before filling a scuba tank
2. Dispose of Faulty Tanks
3. Drain Extra Air From Tank
4. Turn On Air Compressor
5. Attach Compressor to Tank
6. Fill Scuba Tanks
7. Release Air and Remove Air Compressor Yoke
8. Safe Tank Storage
How Much Does it Cost to Fill Up a Scuba Tank?
If you do hire professionals to fill your tanks for you, there are a couple of things you will need:
AquaSportsPlanet is an Amazon Associate. As an Amazon Associate I earn from qualifying purchases.
Dangers to Avoid When Filling a Scuba Tank
Here are some key dangers to avoid when filling up your scuba tank:
What happens if you shoot at a scuba tank?
Filling a Scuba Tank the Right Way
Tim Conner, M.D.
Recent Posts
Should you scuba dive solo? 7 Tips for diving alone
Can You Scuba Dive With No Experience?
 4. Turn On Air Compressor
Now you are ready to start working with the air compressor. Keep in mind that this machine is specifically designed for highly pressurized air, and you cannot use a standard air compressor that could be found at a hardware store. These compressors not only provide much higher levels of air pressure, but they are also equipped with filters that remove harmful compounds. Filtering the air is one of the most important components because it allows for clean air to be collected in the tanks and useable for safe breathing while scuba diving. Once this is connected to the air compressor, you will want to turn it on and make sure it is at the appropriate pressure and size settings. Make sure the air compressor is set up to fill up your specific tank to the desired pressure reading. Some tanks may require different pressure settings than others, so you will need to refer to your tanks guidelines before attempting to fill. Most tanks are filled to around 3,000 psi or slightly higher. Most air compressors will have an automatic shut off setting once the tank reaches a certain pressur

How to Fill a Scuba Tank the Right Way: Complete Guide – AquaSportsPlanet

How to Fill a Scuba Tank the Right Way: Complete Guide
How to Fill a Scuba Tank the Right Way: Complete Guide
These are the steps to filling a scuba tank the right way:
Can You Fill Your Own Scuba Tank?
Steps to Filling a Scuba Tank the Right Way
1. Tank Inspection
These are the different steps you should take to check your tank for damage or wear:
Checklist before filling a scuba tank
2. Dispose of Faulty Tanks
3. Drain Extra Air From Tank
4. Turn On Air Compressor
5. Attach Compressor to Tank
6. Fill Scuba Tanks
7. Release Air and Remove Air Compressor Yoke
8. Safe Tank Storage
How Much Does it Cost to Fill Up a Scuba Tank?
If you do hire professionals to fill your tanks for you, there are a couple of things you will need:
AquaSportsPlanet is an Amazon Associate. As an Amazon Associate I earn from qualifying purchases.
Dangers to Avoid When Filling a Scuba Tank
Here are some key dangers to avoid when filling up your scuba tank:
What happens if you shoot at a scuba tank?
Filling a Scuba Tank the Right Way
Tim Conner, M.D.
Recent Posts
Should you scuba dive solo? 7 Tips for diving alone
Can You Scuba Dive With No Experience?

4. Turn On Air Compressor
Now you are ready to start working with the air compressor. Keep in mind that this machine is specifically designed for highly pressurized air, and you cannot use a standard air compressor that could be found at a hardware store. These compressors not only provide much higher levels of air pressure, but they are also equipped with filters that remove harmful compounds. Filtering the air is one of the most important components because it allows for clean air to be collected in the tanks and useable for safe breathing while scuba diving. Once this is connected to the air compressor, you will want to turn it on and make sure it is at the appropriate pressure and size settings. Make sure the air compressor is set up to fill up your specific tank to the desired pressure reading. Some tanks may require different pressure settings than others, so you will need to refer to your tanks guidelines before attempting to fill. Most tanks are filled to around 3,000 psi or slightly higher. Most air compressors will have an automatic shut off setting once the tank reaches a certain pressur

How to make a water separator for air compressors? | Understanding Air Compressors How to make a water separator for air compressors?
How to make a water separator for air compressors?
How to make a water separator for air compressors?
Three Best Water Separators for Air Compressors
How Compressed Air Filters Work
How to make a water separator for air compressors
Here is what you’ll need for this DIY.
Here is how to make the water separator once you’ve got everything you need.
 Add the threaded 1/2” ball valves below the male adapters. That’s why you need some Teflon tape. Cut the remaining 72-inch copper pipe into two halves and fix on each side of the set-up. One side will be attached to the brass street elbow to go to the regulator, while the other side attaches to the compressed air hose from your compressor. Once you’re done, your setup should look similar to the diagram below. You can also consider getting one of these water separators for your air compressor on Amazon without investing a fortune.

Add the threaded 1/2” ball valves below the male adapters. That’s why you need some Teflon tape. Cut the remaining 72-inch copper pipe into two halves and fix on each side of the set-up. One side will be attached to the brass street elbow to go to the regulator, while the other side attaches to the compressed air hose from your compressor. Once you’re done, your setup should look similar to the diagram below. You can also consider getting one of these water separators for your air compressor on Amazon without investing a fortune.

Installation of a Split Type Air Conditioning Unit. : 4 Steps - Instructables Installation of a Split Type Air Conditioning Unit.
Installation of a Split Type Air Conditioning Unit.
Step 1: Install the Compressor Unit, Connect the Lines and Pull a Vacuum on the Lines.
Step 2: Braze the Mechanical Connections With Solder.
Step 3: Apply Pressure and Make the Electrical Connections.
Step 4: Power Up and Enjoy,
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 The manifold Gauge will register pressure. The vacuum pump can be removed. Carefully and quickly disconnect the manifold from the compressor unit since refrigerant and oil will spurt out. Never remove the manifold without pressure in the lines since you don't want water vapor being sucked back into the lines. Now FULLY Open the liquid line valve. Make the electrical connections inside and out. This part was the easiest. Ask Question
Step 4: Power Up and Enjoy,
We powered up the unit and cold air circulated in the room. I took time to watch my brother's aquarium after all that hard work.

Installation of a Split Type Air Conditioning Unit. : 4 Steps - Instructables

Installation of a Split Type Air Conditioning Unit.
Installation of a Split Type Air Conditioning Unit.
Step 1: Install the Compressor Unit, Connect the Lines and Pull a Vacuum on the Lines.
Step 2: Braze the Mechanical Connections With Solder.
Step 3: Apply Pressure and Make the Electrical Connections.
Step 4: Power Up and Enjoy,
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Recommendations

The manifold Gauge will register pressure. The vacuum pump can be removed. Carefully and quickly disconnect the manifold from the compressor unit since refrigerant and oil will spurt out. Never remove the manifold without pressure in the lines since you don't want water vapor being sucked back into the lines. Now FULLY Open the liquid line valve. Make the electrical connections inside and out. This part was the easiest. Ask Question
Step 4: Power Up and Enjoy,
We powered up the unit and cold air circulated in the room. I took time to watch my brother's aquarium after all that hard work.