at what pressure is liquid propane stored
But household propane is not usually kept in a liquid state by a low temperature. Instead, high pressure is used. In order to keep propane a liquid at room temperature (70 F or 21 C), it has to be held in a tank at a pressure of about 850 kPa. This can be accomplished with a strong metal tank. In contrast, to keep methane a liquid at room temperature requires a tank that can maintain a pressure of about 32,000 kPa.