Proof of Closure Hydramotor Actuator (120V)

Hydramotor valves consist of three components: an actuator with mounting yoke and a valve body. H30 actuators pull when energizer and extend, powered by an internal return spring, when deenergized, providing ON-OFF control of valves. The operating mechanism is completely immersed in oil, eliminating usual maintenance and service. When the actuator terminals are powered, relief valves close and an electric motor-driven pump applies hydraulic pressure to a spring-loaded piston. when the stem reaches full travel, a limit switch opens the pump motor circuit. The relief valves remanin closed, holding the stem in its extended position until the actuator is deenergized, opening the relief valves and retracting the spring-loaded piston. When the actuator is held in its energized position, the motor may restart intermittently to maintain proper pressure against the piston. Note: Image may not be actual representation of item.