The basic components of procedure trays include, at a minimum: items for skin preparation; Items for draping; supplies to give local anesthetic; items for surgical closure. Skin preparation items would include 2x2 or 4x4 non-sterile gauze sponges or 6 cotton-tipped applicators that can be used to prepare the skin with an antiseptic solution. Usually the gauze are picked up by a sponge stick and used to paint the antiseptic on the skin.
Water Supply. The supply line to the toilet is standard 1/2-inch copper pipe. This standard is used throughout the home to supply faucets, showers and any other appliance requiring water, including the washing machine. This 1/2-inch pipe connects to the home's 3/4-inch water pipes. The water supply line does not run directly to the toilet, however.
WATER FLOW THROUGH STEEL OR COPPER PIPE. Steel or copper piping is generally sized for water flow that will result in a friction loss of approximately 2 feet of water per 100 feet of pipe length and a velocity of 7 feet per second or less. This chart indicates the flow in GPM that a pipe size can generally handle: Pipe Size Â½ Â¾ 1 1 Â¼ 1 Â½ 2 2 Â½ 3 4 5 6 8 GPM Up to 1.5 2 - 3.5 4-7 8 - 14 15 - 22 23 - 40 41 - 70 71 - 120 121 - 250 251 - 450 451 - 700 701 - 1200 Adapted from: HVAC Technician's Handbook, LAMA Books, www.lamabooks.com