K-Tork Vane True Rotory Actuators

Ideal for critical applications

There are many different variations available to fit your specific needs. Please Contact Us for a free quote or consultation.

K-Tork Vane actuators


K-TORK Actuators + Controls
represents the future of valve automation. The vane actuator is a ‘True Rotary’ actuator that does not require the conversion of a linear motion to a rotary motion. The result is a simple, highly accurate and reliable quarter-turn pneumatic actuator that is specified for the most demanding process flow control applications.

  • Torque outputs up to 18,300 Nm (155,000 lbf.in)
  • Simple, one moving part
  • Compact industry-leading torque-to-size ratio
  • Easy to convert from double-acting to spring-return
  • Precise modulating for ¼-turn control valves
  • Low-friction, dual-opposed lip seals provide extremely long life
  • Totally-enclosed, non-ventilated spring housing
  • Low-stress spring for long-life
  • Integral NAMUR VDI/VDE 3845
  • No pressure-retaining O-Rings
  • Fast operation with large ports and no air restrictions
  • Fully AWWA #C-541 compliant
  • Standard 80-100° rotation, adjustable
  • Standard temperature rating -30° to +80°C (-20° to +175°F)
  • Standard working pressure 10 bar (150 PSI) rating, most models
  • Standard ISO 5211 drive on all S/R models


  • High-temperature to +150°C (+300°F)
  • Restricted travel to 30° rotation
  • De-clutch gear manual override
  • ‘RANGER CG’ Corrosion-Guard finish
  • Integral air fail-safe reservoir
  • Full range of O/C, Modulating or Bus Network controls from stock
  • Retrofit and Factory Fit linkage kits, valve automation services
  • Mild steel coupling broached to match actuator drive shaft
  • Male shaft adapter for spring-return models

K-TORK Air Fail-Safe actuators incorporate an integral air reservoir to fail valve in desired position upon loss of air pressure, electrical power, or both. Available for General Purpose or Hazardous Area Classification installations.

  • Economical alternative to large , heavy mechanical spring-return actuators
  • Will not allow the valve / actuator to “drift” during periods of low supply air pressure
  • Field reversible to change the fail position
  • Capable of multiple valve cycles after loss of supply air
  • NAMUR VDI/VDE 3845 mounting standard for control accessories



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