Electro-hydraulic valve actuator
3 000 psig | EH-44 series RE:Automation Technology Inc.

very actuator needs power: air or hydraulic fluid pressure, electrical, solar, etc. With ATI's products, you will never be restricted by your available power source. We accommodate all power sources. Series EH-44 Electro-Hydraulic Actuator Control System

This control system is designed to be a 50-3,000 psig hydraulic power and control source to drive either linear, quarter-turn or multi-turn hydraulic valve actuators.

It is a totally self-contained unit inside a standard NEMA 4 epoxy painted carbon steel enclosure. It includes a 100% duty cycle TEFC electric motor, motor starter, hydraulic pump and reservoir, directional control valves and electrical controls. The Series EH-44 permits variable torque or thrust by means of an adjustable pressure switch as well as variable actuator speed by means of flow control valves. Modulating service with a 4-20 made control input signal is available. Smaller, lighter weight and less expensive actuators can now operate larger valves because of the increased pressure available (Torque or Thrust is equal to the area of the actuator times the pressure available to do the work). The 100% duty cycle motor runs only when the system pressure drops below the pressure switch set point