The action principle of reducing pressure valve is to rely on the local resistance of the flow of water in the valve to reduce water pressure, the scope of the water pressure drop by connecting the valve disc film or piston on both sides of the inlet and outlet water pressure difference automatic regulation.In recent years, some new pressure reducing valves have appeared, such as constant ratio type pressure reducing valve.The principle of constant pressure reduction is to control the pressure ratio of the floating piston in the valve body, and the pressure ratio of the inlet and outlet ends is inversely proportional to the piston area ratio on the inlet and outlet sides.The pressure-reducing valve works smoothly and without vibration.There is no spring in the valve body, so there is no spring corrosion or metal fatigue failure.The sealing performance is good without leakage, thus reducing the dynamic pressure (when the water flows) and static pressure (when the flow is 0);Especially in the decompression without affecting the water flow.
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