The term “liquefied gas” may seem a contradiction in terms since all things in nature are either a liquid, a solid or a gas. Yet, it is the unique character of LP Gas that makes it such a popular and widely used fuel. LP Gas at normal temperature and pressure is a gas. It changes to a liquid when subjected to modest pressure or cooling. In liquid form the tank pressure is about twice the pressure in a normal truck tire.

                                  The reason LP Gas is liquefied is to make it easy and efficient to transport and store. One unit of liquid has the same energy content as 270 units of gas. If left as a gas the container to hold the fuel would be 270 times larger than what is required as a liquid. In other words, LP Gas has density (compactness) for storage and transportation, yet all the benefits of a clean vaporous fuel when used at the burner tip or engine.

                                  LP Gas usually consists of a mixture of propane and butane for standard heating and cooking purposes. Propane starts vaporizing above -45°C, so it is more versatile for general use. Butane starts vaporizing above -2°C and requires a propane/butane mixture in cold environments as it will not vaporize as readily as propane. LP Gas can also be used in specialized applications that require a more rigorous specification. Such applications include food processing, aerosol propellants and automotive fuel (autogas).