Lithotripsy is a procedure that uses shock waves to break up stones in the kidney, bladder, or ureter (tube that carries urine from your kidneys to your bladder). After the procedure, the tiny pieces of stones pass out of your body in your urine.
Propane gas is ideal for grills because, when pressurized, it compresses and turns to liquid, making it easy to store in tanks. It also contains more cooking energy than natural gas as measured in British Thermal Units (BTU). A BTU is the amount of energy required to raise the temperature of one pound of water 1Â°F. There are about 2,500 BTU in one cubic foot of propane and only about 1,000 BTU in one cubic foot of natural gas. Manufacturers tout the number of BTU their grills can produce, but the number can be very misleading. BTU is not indicative of the heat it can generate.
(Orifice hole size will be larger for natural gas supply models than propane because of the lower natural gas operating pressure). The actual BTU output is determined by the pressure of the gas supplied, volume of gas which is regulated by the valve and by the orifice fitting orifice hole size.As an example, assuming a fixed natural gas pressure of 3.5 inches of water column a #48 orifice will give a different BTU output than a #46.lthough the natural gas pressure supplied to your home is regulated by your local gas company, some grills designed for natural gas also incorporate an additional regulator at the grill to assure the maximum gas pressure supplied to the grill.