Every actuator needs power: air or hydraulic fluid pressure, electrical, or solar. With ATI’s products, you will never be restricted by your available power source. We accommodate them all.
The ATI Electro-Hydraulic 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.
Our self-contained unit is housed in 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 system 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 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.
The Air Fail action is achieved by using a spring-return actuator or by a hydraulic accumulator system with a double-acting actuator. A timer and reservoir float/level switch are used as safety devices to shut the system down if there is a leak or line rupture. Also, a 10-micron return oil filtration system with gauge protects and enhances the life of the system. An enclosure heater and thermostat manage any moisture or condensation that may appear inside the enclosure. The system can be designed to operate single or multiple actuators and is suitable for small or large volumetric displacement actuators. The unit can be AC-powered, DC-powered or solar-powered. Controls for both local and remote operation are standard with a pilot light array.
This power system can seamlessly integrate with ATI’s proprietary control system to provide a precise electro-hydraulic actuator for control valve applications.
- Drives linear, quarter-turn or multi-turn valve actuators
- Smaller, lighter and less expensive for operating larger valves
- Can be powered by AC, DC or solar
- Can be provided in spring-return or double-acting configurations