LPG is a mixture of hydrocarbon gases, primarily propane and butane. The mixture can change depending on the season. Natural gas out of the ground is made up of various components, such as methane, butane, propane, ethane, pentane, heptanes+ and various impurities. The difference in each of these is the number of carbon and hydrogen atoms in each molecule.
My guess is a propane tank is around 100 psi, it is measured by weight rather than pressure. A natural gas line at your house is around 3-4psi. That is why it takes so long for a home CNG compressor to fill your car-the system is so low pressure and volume, it just doesn't give up enough to fill it fast.
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Originally Posted by OMEGAMAN
Whats the difference between LPG and propane. LPG just means it's liquified doesnt it? Also what pressure does natural gas come out of the wall at I never thought about that before.
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