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Hydraulic actuators use oil under high pressure as energy power source.

Main features of hydraulic actuators are:

  • Compact and small design
  • Smooth operation over complete valve stroke
  • Spring return actuators for fail-safe operation
  • Possibility for submerged or sub-sea operation

Hydraulic actuators can be equipped with many ancillaries such as:

  • Limit switches (direct mounted to actuator or in a switchbox)
  • Solenoid valves
  • Throttle block
  • Potentiometer
  • Pilot operated check valves
  • Lever or hand pump unit


  • Remote open/close position monitoring of the valve (mechanical switches or inductive proximity sensors)
  • Remote on/off operation of actuator
  • Speed control for increased operating times
  • Continuous valve disc position feedback (resistance signal)
  • Maintain valve disc position after hydraulic supply failure
  • Manual override of operation after hydraulic supply failure

Specific technical information on request.