| 摘要 |
A pressure control valve is disclosed, which can suppress the generation of noise and vibration due to cavitation when hydraulic fluid is fed from a high-pressure side to a low-pressure side, which is caused by the change of a pilot poppet structure that is in detachable contact with a seat of the pressure control valve to close/open a flow path. The pressure control valve includes a pilot poppet, being detachably in contact with a two-stage seat formed in a flow path connecting a high-pressure path with a low-pressure path, for closing/opening the flow path, an elastic member for elastically biasing the pilot poppet, which has been pressed onto the seat to close the flow path, to its initial state, and a ring-shaped balancing groove formed on a periphery of the pilot poppet that forms a ring-shaped gap in association with the seat when the pilot poppet is lifted from the seat.
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