The gas that is kept inside the cylinder is called LPG i.e. liquefied petroleum gas. It is mainly a mixture of butane and propane gas. LPG is a gas at normal atmospheric pressure and temperature, but it can be liquefied when high pressure is applied or when the temperature drops sufficiently. In the liquid state it is reduced in volume (i.e. becomes much more compact) and can be easily packed/stored in large quantities in cylinders. LPG is a highly flammable gas It expands in volume at normal temperatures and is likely to explode But in the liquid state this risk is greatly reduced LPG cylinders are never one hundred percent full Deliberately left somewhat empty As a result, there is always a balance between gas and liquid in the cylinder. When you start using LPG i.e. when you open the regulator of the cylinder, the pressure in the upper part of the cylinder decreases a little, and the volume of the liquid increases and the liquid in the upper part turns into a gas. When you stop using LPG, the pressure returns to normal. This whole matter is controlled by the regulator Another very important warning is to never use an LPG full cylinder lying on the ground.
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Inside the Gas Cylinder
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Gas Cylinder
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