| 摘要 |
PROBLEM TO BE SOLVED: To provide a pressure control valve that can easily discharge fluid on a high-pressure side to a low-pressure side even when a valve port is kept in a closed state.SOLUTION: An opening/closing valve 17 opens/closes a bypass passage 15 communicating a high-pressure space 3C and a low-pressure side space 3D. Consequently, when the opening/closing valve 17 is opened, working fluid on a high-pressure side is easily discharged to a low-pressure side. Since the opening/closing valve 17 is provided outside a casing 3, an operator performing maintenance can easily open the opening/closing valve 17. Thus, in this embodiment, fluid on the high-pressure side can be easily discharged to the low-pressure side at the time of maintenance. |
