A liquefied petroleum gas (LPG) pressure regulator is a device that automatically changes the gas flow rate through a regulating valve to maintain a specified outlet gas pressure. It is generally classified into two types: direct-acting and indirect-acting.
The LPG pressure regulator is a crucial component for the safe combustion of LPG, connecting the cylinder and the stove. The regulator not only converts the high-pressure LPG in the cylinder to low-pressure LPG (from 980 kPa to approximately 100 kPa), but also stabilizes the low-pressure gas within a pressure range suitable for safe combustion in the stove. In other words, the LPG output through the regulator ensures that the pressure at the stove's burner port is always approximately 2940 Pa higher than the ambient atmospheric pressure. Therefore, the pressure regulator is essentially an automatic pressure stabilizing device.