公开(公告)号：EP4269848A1

公开(公告)日：2023-11-01

申请号：EP21914985.3

申请日：2021-10-26

申请人： KAWASAKI JUKOGYO KABUSHIKI KAISHA

发明人： ITO, Noboru ,  NAKAHARA, Akihiro ,  FUJIWARA, Hiroaki ,  FUNAKUBO, Yuko ,  KAMEYAMA, Fumio

IPC分类号： F16K17/06

摘要： A relief valve with a check function relieves hydraulic fluid from a first port to a second port, and includes a housing having a body, and an adjustment member provided to be capable of advancing and retracting with respect to the body; a seat member provided in the body, the seat member being formed with a relief passage connecting to each of the first port and the second port; a relief valve body that is unseated from or seated on the seat member to open or close the relief passage, the relief valve body receiving pressure of the first port in a direction of opening the relief passage; a first biasing member that biases the relief valve body against the pressure of the first port, with a biasing force being adjusted by advance or retraction of the adjustment member; a check valve body that opens or closes a check passage connecting to each of the first port and the second port, the check valve body receiving pressure of the second port in a direction of opening the check passage; and a second biasing member that biases the check valve body against the pressure of the second port.