Multiple pressure compensated flow control valve device of parallel connection used with fixed displacement pump

摘要

A multiple control valve device for connection in parallel between a single fixed displacement pump and one or more oil actuators to control operation of all or a number of the actuators simultaneously. The pump can supply sufficient oil at an optimum pressure which is the highest loading pressure required among the working actuators. At the same time the desired controlled oil flow rate can be held to the desired value for each working actuator by this device. Also this valve device has stepless speed changing control, provides a self-depressing function of pump pressure loading, and can also have the function that a pressure rise or a pressure variation in the actuators can be treated automatically.