公开(公告)号：US10180149B2

公开(公告)日：2019-01-15

申请号：US15120907

申请日：2015-02-25

Applicant: KYB Corporation

Inventor： Syota Mizukami ,  Takeshi Terao

IPC: F15B13/04 ,  F15B13/02 ,  F16K17/02 ,  F16K11/07 ,  F16K27/04

Abstract: A control valve device includes a valve body having an actuator port connected to an actuator and a relief passage configured to allow the actuator port to communicate with a return passage, a spool slidably assembled into the valve body and configured to allow the actuator port to selectively communicate with a supply side or a return side, a relief valve configured to open/close the relief passage to control pressure of the actuator port, and an on/off valve assembled into an assembling hole which is formed in the valve body. The on/off valve configured to allow the actuator port to communicate with the relief passage through the assembling hole at the time of valve open.