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The task of pressure reducing valves in a hydraulic circuit is to maintain a rather constant outlet pressure despite a higher and changing inlet pressure. They are used when an hydraulic circuit with a higher pressure level (primary side) is to supply another circuit with a lower pressure level (secondary side), without affecting the higher pressure in the primary circuit. There is a design related leakage flow which has to be led pressure less via port R to the tank.
A reversal of the direction of flow is possible up to approx. 50% of Q max. A by-pass check valve has to be provided for higher reversed flow. The pressure reducing valves size 11 and 21/22 feature an override compensation i.e. acting like a pressure limiting valve, if the pressure on the secondary side exceeds the set pressure e.g. due to external forces.
INTERNET USERS ALSO CONSULTED ON THE CATEGORY PRESSURE REGULATORS
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