Hydraulic Actuators

Our hydraulic actuators are designed to suit a wide range of valve automation applications; from commodity to severe-service extremes.

Select a Hydraulic Actuator

Double Acting Hydraulic
Actuator
(ML Series)
Spring-Return
Hydraulic Actuator
(MS Series)
API 6A Hydraulic
Valve Actuator
(C6A Series)
Linear Valve Actuators: Double-Acting Hydraulic Valve Actuator

Double-Acting Hydraulic Valve Actuator

ML Series

SIL 3 capable hydraulic actuator. Triple-seal gland with dual wipers. Four wrench flats on piston rod. Retained bushing is removable without cylinder dis-assembly. The valve actuator has a high load piston seal has excellent wear resistance and sealing.

  • Piston rod diameter: 1″ to 10″
  • Single-stage or tandem
Visit ML Series
  • PSI 3000 psi
  • Thrust up to 1,500,000 lbs
  • Low Temp. -54ºC to 60ºC
  • Standard Temp. -40ºC to 105ºC 
  • High Temp. -29ºC to 205ºC 
Linear Valve Actuators: Spring-Return Hydraulic Valve Actuator

Spring-Return Hydraulic Actuator

MS Series

SIL 3 capable spring-return hydraulic actuator. Custom dimensional sizes and thrusts available. Springs are pre-compressed and seals in a factory-installed canister. Available in fail-open or fail-close.

  • Piston rod diameter: 1″ to 7″
  • Single-stage
Visit MS Series
  • PSI 3000 psi
  • Bore Size 1 1/2″ to 14″ 
  • Low Temp. -54ºC to 60ºC
  • Standard Temp. -40ºC to 105ºC 
  • High Temp. -29ºC to 205ºC 
Linear Valve Actuators: Spring-Return Hydraulic Valve Actuator

API 6A Hydraulic Valve Actuator

C6A Series

Visit 6CA Series
  • Nominal Pressure 3000 psi / 5000 psi
  • Closing Time ≤ 5s
  • Standard Temp. -40ºC to 70ºC 

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.

Integrated resources and capabilities
We bring you the benefits of a specialized custom shop together with full-service actuator 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.