| 摘要 |
There is disclosed a valve assembly in combination with a hydraulic circuit to operate a motor in the circuit in a forward and reverse direction. The valve assembly includes check valve means for regulating fluid flow to the motor, pilot valve means for operating the check valve means responsive to pressures within the circuit, and relief valve means for relieving overpressure within the circuit. The combination is constructed and arranged so that the valve assembly substantially prevents cavitation of the motor, and is also operative to and isolate the motor from external loading.
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