| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic buffer that reduces vibration at the time of opening and closing a relief valve.SOLUTION: A damper chamber 36 is formed in a relief valve 14 by slidably fitting a shaft part 28 of a screw 22 into an orifice passage 35 of a valve body 19. Since a dash pot functioning so as to delay response to the relief valve 14 is constituted by the damper chamber 36, vibration (abnormal sound) emitted from the relief valve 14 can be effectively suppressed without impairing an orifice characteristic. |
