Cylinders & Control
Systems Built to Last

For the World’s most challenging environments

Linear Valve Actuators

Diaphragm Type Actuator

CDA Series

Excellent repeatability: tested to over 400,000 cycles without loss of precision! Outputs repeatable thrust force. Nested spring design to maintain compactness.

  • Effective Diaphragm Area: up to 217in2
  • Direct or Reverse Acting Styles
  • Fail-Close or Fail-Open
  • PSI up to 60 psi
  • Thrust up to 13,000 lbs
  • Stroke up to 4″
Download Our CDA Brochure



Complete the form to get a quote within 24hrs.



Double-Acting Valve Actuator

A Series

Dual or triple seal gland with a high-strength carbon fibre barrel. Bronze/Teflon piston wear band and a removable cartridge bushing. Made-to-order stroke lengths. Valve mounting kits available

  • Bore size: 4″ to 42″
  • Piston rod diameter: 1″ to 5 1/2″
  • Available in single-acting and double-acting
  • PSI 150 psi
  • Bore Size 4″ to 42″ 
  • Low Temp. -54ºC to 90ºC
  • Standard Temp. -20ºC to 104ºC 
  • High Temp. -10ºC to 200ºC 

cad-icon

Configure & download CAD model

Download Our A Brochure



Complete the form to get a quote within 24hrs.



Spring-Return Valve Actuator

AS Series

Available in fail-close or fail-open. Standard offering – no custom design required. Available in a full range of dimensional sizes and thrusts. Springs are pre-compressed and sealed in a factory-installed canister. Canisters are easily and safely removed for in-field servicing.

  • Valve Size: 2” to 10”
  • Thrust: up to 72,000 lbs
  • Designed for the most demanding applications where position control is essential
  • PSI 150 psi
  • Valve Size 2” to 10″
  • Low Temp. -54ºC to 90ºC
  • Standard Temp. -20ºC to 104ºC 
  • High Temp. -10ºC to 200ºC 

cad-icon

Configure & download CAD model

Download Our AS Brochure



Complete the form to get a quote within 24hrs.



Control Valve Actuator

AT Series

Compact design with self-contained transducer. No exposed transducer or clumsy linkage arms. Modular transducer for easy installation. Switchable analog or digital output. Dual or triple seal gland. High-strength carbon fibre barrel. Made-to-order stroke lengths. Valve mounting kits available

  • Bore size: 4″ to 42″
  • Piston rod diameter: 1″ to 5 1/2″
  • Stroke: Up to 144″
  • Single and double-acting
  • Fail-Open, Fail-Close
  • PSI 150 psi
  • Bore Size 4″ to 42″ 
  • Low Temp. -40ºC to 90ºC
  • Stand Temp. -20ºC to 90ºC 

cad-icon

Configure & download CAD model

Download Our AT Brochure



Complete the form to get a quote within 24hrs.



Dart Valve Actuator

AT Series

Modular transducer for easy installation. Switchable analog or digital output. Dual or triple seal gland. High-strength carbon fibre barrel. Made-to-order stroke lengths. Vibration resistance up to 10Gs at 2000Hz.

  • Thrusts up to 55,000 lbs
  • US & CAN Patents

Durable. Accurate.
Compact. Modular.

Download Our AT Brochure



Complete the form to get a quote within 24hrs.



Double-Acting Hydraulic Valve Actuator

ML Series

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

  • Piston rod diameter: 1″ to 10″
  • Single-stage or tandem
  • 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 

cad-icon

Configure & download CAD model

Download Our ML Brochure



Complete the form to get a quote within 24hrs.



Spring-Return Hydraulic Actuator

MS Series

SIL 3 capable. 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
  • 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 
Download Our MS Brochure



Complete the form to get a quote within 24hrs.



Electro-Hydraulic Linear Valve Actuator

E2H Actuator

All in one design. No need for a separate hydraulic power unit and hoses. Easy to use touch screen for quick setup and operation. SIL 3 capable (pending).

  • Thrust: up to 125,000 lbs
  • 100% Duty Cycle
  • ESD Capable
  • Stroke Range up to 36″
  • Thrust up to 125,000 lbs
  • Low Temp. -50ºC to 90ºC
  • Standard Temp. -20ºC to 104ºC 
Download Our E2H 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.

Integrated resources and capabilities
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.