| 摘要 |
A pump device (100) is provided with a flowrate control valve (2) that recirculates, to the intake side, a portion of a working fluid discharged from a pump (1), wherein the flowrate control valve (2) is provided with: a valve body (21); a first fluid pressure chamber (23) provided facing the end surface of one side of the valve body (21) and connected with a discharge channel (82); a second fluid pressure chamber (24) provided facing the end surface of the other side of the valve body (21) and connected with the discharge channel (82); a biasing member (22) that is accommodated in the second fluid pressure chamber (24) and biases the valve body (21) in the valve closure direction; and a pressure regulator (3) that is provided to a connection path (84) connecting the second fluid pressure chamber (24) with the discharge channel (82) and regulates the pressure inside the second fluid pressure chamber (24). |
