Push-type control valve for fluid actuator

摘要

A control valve for a fluid actuator has a slide valve mounted within a housing with an external gripping knob on one end and a piston on the other end. A spring engages the piston and continuously urges the slide valve and knob to an outer position. The knob is gripped and the slide valve is pushed inwardly for resetting the piston after the control valve has been actuated or fired to exhaust the fluid from the fluid actuator. Fluid from associated high and low pressure pilot valves holds the slide valve and piston in an inner position against the bias of the spring during normal operation of the fluid system.