Liquefied petroleum gas (LPG) is a blend of various elements of Hydrocarbon derived from Natural Gas and by increasing the pressure and decrease temperature, gas can be turned into liquid. LPG are flammable, colorless, noncorrosive, and nontoxic. LPG gas will be shaped over in atmospheric conditions. The volume of liquefied petroleum gas (LPG) in liquid form being smaller than in the form of gas for the same weight. Because it is liquefied petroleum gas marketed in liquid form in a metallic tube-tube gas-pressure vessel, in order to allow the occurrence of heat expansion (thermal expansion) of the liquid that contains LPG tubes, usually not filled in full, i.e. only about 80-85% of its capacity. The ratio between State gas volume vaporized gases in liquid state varies depending on composition, pressure and temperature, but is typically around 250:1. The use of liquefied petroleum gas (LPG) in Indonesia is very vital especially used by as fuel in heating appliances, and cooking equipment .