Yuken Pressure Reducing Valves/Pressure Reducing and Check Valves
These valves set hydraulic circuit pressure equal to or below a pressure in the main circuit. When the outlet pressure reaches a preset level, the valve opens, and the balanced piston moves to throttle a passage to keep the outlet pressure constant; thus, the pressure is reduced. The outlet pressure is maintained constant, regardless of the inlet pressure. If flow resistance at the inlet side is equal to or lower than the preset pressure for the pressure reducing valve, the outlet pressure is given at the same level as the inlet pressures. If flow resistance at the outlet side is equal to or lower than the preset pressure for the valve, the valve opens fully; therefore, both the inlet and outlet pressures are the same.
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