LP-Gas Systems --- Section 7
The Executive 2005
313
NOTE:
The above information is not a complete guide for the use of LP-Gas tanks or
appliances. In cold climates keep fuel levels above 50% in order to keep vapor-
ization of LP-Gas at the highest level.
LP-Gas Statistics:
Pounds Per Gallon 4.24
Specific Gravity of Gas 1.50
Specific Gravity of Liquid .504
Cubic Feet Gas Per Gallon of Liquid 36.38
Cubic Feet Gas Per Pound 8.66
BTU Per Gallon 91,502
BTU Per Pound 21,548
Dew Point in Degrees Fahrenheit - 44° F
Vapor Pressure at 0° F 31
Vapor Pressure at 70° F 127
Vapor Pressure at 100° F 196
Vapor Pressure at 110° F 230
Flash Point 842° F
Basic Facts About LP-Gas:
• LP-Gas detectors are a federal requirement on
all LP-Gas equipped recreation vehicles.
• LP-Gas is a by-product produced by refining oil.
• Odor is added to LP-Gas after the refining
process.
• Each liquid gallon of LP-Gas produces 91,502
BTU (British Thermal Units).
• Temperature affects pressure of LP-Gas. Internal
tank pressure can exceed 200 psi.
• Tanks or valves contain pressure relief valves.
The relief valve opens at 125% above tank rat-
ing.
• LP-Gas stops vaporizing at -44º F.
• Standard LP-Gas operating pressure is 11" of
Water Column or approximately 6 ¼ ounces per
square inch.
• An inch of Water Column is a measurement of
applied pressure to one side of a U-Tube ½
filled with water at sea level. The amount of
pressure required to raise the water level 11",
represents 11” of Water Column.
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