what is LPG?
LPG is the generic name for commercial propane and commercial butane which are products produced by the oil and gas industries. When compressed moderately at normal temperature it becomes a liquid. When gas is withdrawn from a cylinder the pressure drops and the liquid reverts to gas. The expansion ratio of gas from liquid is 270 : 1 which means that you will get 270 litres of gas for every litre of liquid LPG. Therefore it is a significant advantage to transport it in liquid form. LPG is heavier than air and when released with little velocity it drops to the ground. Because LPG has no natural odour, a distinctive odorant is added so that it will be noticeable should a leak occur.