When the pressure in the water supply pipeline exceeds the set pressure of the pressure relief valve, the pressure relief valve automatically opens for rapid pressure relief to protect the safety of the pipeline, and can also be used as a pressure holding valve to ensure the upstream water supply pressure of the main valve. Can accurately maintain the constant safe setting pressure, once overpressure, pressure relief valve quickly opened, timely pressure relief. Smooth and reliable shutdown eliminates pressure aftereffects.

Typical installation diagram