| 摘要 |
<p>A valve in the circuit between a hydraulic control valve and a double acting hydraulic or fluid motor to prevent cavitation in the expanding working space of the motor by controlling the exhaust flow from the contracting working space. The anti-cavitation valve is responsive to the pressure maintained in the expanding working space by being connected through a logic circuit to the pressure in the expanding working space such that the response of the anti-cavitation valve will be varied in accorance with the pressure level at which the hydraulic motor is operating. In addition, the anti-cavitation valve functions to lock the hydraulic motor when the manual control valve is in its neutral position or when the supply pump is inoperative due to the prime mover for the pump being shut-off and the manual valve is actuated.</p> |
