Rotary Valve Actuators
Actuation Solutions and Systems for the
World’s Most Challenging Environments
Our Rotary Valve Actuator Lineup

Valve Actuator
(E2HR Series)

Pneumatic
Rotary
Actuator
(CSY Series)

Gas/Oil
Rotary Actuator
(CGO Series)

Electro-hydraulic Rotary
Valve Actuator
(E2H90 Series)

Rack & Pinion Actuator
(CRP Series)
Electro-Hydraulic Rotary Valve Actuator
E2HR Series
The E2HR Electro-hydraulic Rotary Actuator features an all-in-one design and packs high performance into the smallest possible installation envelope for ¼ turn valve actuating applications.
All hydraulic components and sensors are integrated into a single compact manifold block that also houses the actuator and integral oil reservoir.
- Torque up to 300,000 in-lb
- SIL-3 Capable (pending)
- Hydraulic Manual Override
- Speed 20°/Sec
- Torqueup to 300, 000 in-lbs
- Standard Temp. -50ºC to 40ºC
Download Our E2HR Brochure
Complete the form to get a quote within 24hrs.
Pneumatic Rotary Actuator
CSY Series
The CSY Pnuematic Rotary Actuator modular design that allows customization to fit specific needs. Bi-directional travel stop allows an adjustable stroke range of 80 degrees to 100 degrees. NAMUR mounting allows standardization of mounting hardware for a wide range of shaft-driven accessories.
- Double-Acting or Spring-Return
- Torques up to 2,500,000 in-lbs
- Operating Pressure: 40 – 100 PSIG
- Low Temp. -40ºC to 80ºC
- Standard Temp. -20ºC to 80ºC
- High Temp. -20ºC to 120ºC
Download Our CSY Brochure
Complete the form to get a quote within 24hrs.
Gas/Oil Rotary Actuator
CGO Series
The CGO Gas/Oil Rotary Actuator is suitable for Rotary (Quarter-Turn) valves with a linear design also available. Nitrogen Gas Application: High-sulfur natural gas and oil pipelines can use nitrogen gas as a power supply. Optional solar power module.
- Torques up to 4,000,000 in-lbs
- Air Supply Pressure: 5 – 150 Bar
- Electronic Line Break Protection
- Standard Temp. -15ºC to 80ºC
Download Our CGO Brochure
Complete the form to get a quote within 24hrs.
Electro-Hydraulic Rotary Valve Actuator
E2H90 Series
The E2H90 Electro-hydraulic Rotary Valve Actuator is used for industrial fields where highly reliable controlled valves are required. They are used to drive angular-stroke valves, linear-stroke valves, and lifting-lever-type ball valves.
- On/Off Service
- Operating Voltage: 220 VAC, and any global 3-Phase voltage ratings
- Fail Last, Fail Close or Fail Open
- Operating Pressure 3000 psi
- Thrust up to 4,000, 000 in-lbs
- Standard Temp. -40ºC to 70ºC
Download Our E2H90 Brochure
Complete the form to get a quote within 24hrs.
Rack & Pinion Actuator
CRP Series
Full compliance to worldwide standards and specifications. The CRP Rack & Pinion Actuator comes with an innovative universal drive shaft: Customized drive connections can be made in lieu of the standard double square bottom drive shaft connection.
- All moving parts are contained in Nylon bearings
- Torques up to 110,000 in-lbs
- Available in Double-Acting or Spring-Return
- PSI 115 psi
- Low Temp. -40ºC to 80ºC
- Standard Temp. -15ºC to 80ºC
- High Temp. -15ºC to 150ºC
Download Our CRP Brochure
Complete the form to get a quote within 24hrs.
Why Cowan
Cowan offers a winning combination of skills, resources and customer service excellence.
Deep roots
We bring over 50 years experience in Canadian and international industrial markets – mining, oil & gas, electric power generation, aviation, pulp and paper, coal processing, and much more.
Exceptional teamwork
Great products, like great companies, are only as good as the people behind them.
We bring you the benefits of a specialized custom shop together with full-service manufacturing and assembly – all part of an integrated solution tailored to your needs.
The best systems and solutions in the business
Cowan has built an international reputation on the quality of our products and their performance record in the world’s most challenging environments.