A gas pressure regulating valve (GPRV) is a device designed to control the pressure of gas flowing through a pipeline. Its primary function is to reduce high inlet pressure to a safe and usable outlet pressure, which is essential for both safety and performance. These valves ensure that the gas delivered to appliances, such as heaters and stoves, is at the correct pressure, thus preventing potential hazards associated with overpressure, such as leaks or explosions.