Performance Highlights

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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 50-5,000 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 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. Also, for larger Electro-Hydraulic Controls Systems or for Systems operating in a high level of hazardous area, a skid is available to mount the hazardous area power unit on with electrical controls placed in an enclosure beside the power unit.

The failure mode is achieved by using a spring-return actuator or by a hydraulic accumulator system with a double-acting actuator. A reservoir float/level switch or pressure sensor can be 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. 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 operator control and remote Digital Control System (DCS) operation are standard with selector switches. The control systems can be designed for hazardous areas up to Class 1 Division 1/Zone 1 or Zone 1 with FM, UL, ATEX, or IEC system certification approvals as required.

This power system seamlessly integrates with ATI’s proprietary control system to provide a precise electro-hydraulic actuator for control valve applications.

ATI Electro-Hydraulic System Performance Highlights
  • Drives linear, quarter-turn or multi-turn valve actuators
  • Self-contained
  • 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
  • Can be designed up to Class 1 Division 1/Zone 1 or Zone 1 hazardous areas

Industries

ATI Electro-Hydraulic Systems are used in the following industries. Click below to learn more.

Our Client

Testimonials

In all of the readiness reviews that I have conducted, ATI is by far the most well-prepared. The organization has built a solid foundation, and is off to a healthy start to the new [ISO 9001:2015] standard; ATI has clearly taken a serious approach to addressing the risks of its business and handling mitigation in a controlled manner.

Tom R., , Independent Auditing Agency

ATI linear actuators on 6-inch and 8-inch gate valves have worked flawlessly since put in Y-grade liquid service in 1994.

George Ford, Engineer, Enterprise Products

I was impressed and quite thankful for ATI’s commitment to get the job done on time and with a high level of quality.

Konrad M. Fontenot, Engineering Section Group Lead, Exxonmobil Beaumont

ATI has been supportive when we have had questions and their product has worked well for us. If the application came up again where we had the choice of using the ATI actuators, I would recommend getting them.

,

All of our switching valves for our mole sieve beds are orbit valves fitted with ATI actuators. These have been in service for ~8 months now and have had no issues.

,

ATI was very supportive during this project with helping us when we had to retrofit the actuators to the valves during a quick series of valve replacements.

,

We have 14 of your actuators at this facility, with a clean rack record for over a decade.

Maintenance Team Member, Industrial Gas Supplier

I really appreciate the commitment to deliver the needed products on a very short schedule.

Instrument Engineering Section Member, Gulf Coast Refinery

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