The commercial cylinder is designed for commercial entities such as restaurants and eateries. It is also suitable for homes which have high LPG consumption.
LPG is stored under pressure as a liquid in a gas cylinder. It turns back into a gas when you release some of the pressure in the gas cylinder by turning on your appliance.
The pressure within a gas cylinder can be 800-900kPa. This varies based on the ambient temperature, exposure to the radiant heat of the sun and the amount of gas remaining in the gas cylinder.