Principle Of Pressure Relief Valve

Function Principle: The pressure relief valve relies on the local resistance of the inner passage of the valve to reduce the water pressure. The range of the water pressure drop is automatically adjusted by the water pressure difference between the inlet and outlet of the film connecting the valve disc or the piston.

The principle of proportional decompression is to control the water pressure ratio of the floating piston in the valve body. The pressure reduction ratio at the inlet and outlet end is inversely proportional to the area ratio of the piston at the inlet and outlet side. The pressure relief valve works smoothly and without vibration; there is no spring in the valve body, so there is no worry of spring rust and metal fatigue failure; the sealing performance is good and does not leak, so it reduces both dynamic pressure (when water flows) and static pressure (when flow is 0); especially, it does not affect water flow at the same time of pressure relief.