Liebherr valve actuators with spring return

3 companies | 20 products
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electric valve actuator
electric valve actuator
ELC 250SR

Torque: 2.5 Nm
Actuator force: 2,500 N
Stroke: 0 mm - 40 mm

... /b>
The ELC 250SR electric linear actuator is designed for safety-critical valve applications requiring a reliable fail-safe action. It delivers 2.5 kN of thrust and incorporates a spring- return ...

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Rotork
electro-hydraulic valve actuator
electro-hydraulic valve actuator
SI4

Torque: 0 Nm - 200,000 Nm
Voltage: 24 V

... >
SI4 part-turn actuators offer the flexibility to be customised to suit applications up to 200,000 Nm (147,500 lbf.ft). The Skilmatic SI range are self-contained electro-hydraulic actuators combining the simplicity ...

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Rotork
electro-hydraulic valve actuator
electro-hydraulic valve actuator
SI4

Torque: 400,000 Nm
Voltage: 24 V

... lock-in-last position via mechanical spring- return

  • Spring-return configuration for certified safe shutdown
  • Adjustable operating speeds with stepping facility; optional
  • ...

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    Rotork
    pneumatic valve actuator
    pneumatic valve actuator
    CP

    Torque: 0 Nm - 4,500 Nm

    ... modular, scotch yoke actuators available in double-acting and spring- return configurations. The compact and efficient design yields surprisingly high torques even at low pressures. Using design concepts ...

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    pneumatic valve actuator
    pneumatic valve actuator
    GP

    Torque: 0 Nm - 600,000 Nm

    ... GP/GH range scotch yoke actuators are designed to operate ball, butterfly and plug valves requiring a rotary, quarter-turn movement for either on/off or modulating duty and can be supplied with symmetrical or canted torque ...

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    Rotork
    hydraulic valve actuator
    hydraulic valve actuator
    HPG

    Torque: 0 Nm - 600,000 Nm

    ... HPG actuators are designed to use pipeline gas as the motive power source. Using our industry recognised and proven hydraulic scotch-yoke quarter-turn design, the HPG is a direct gas actuator customisable to end-user ...

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    Rotork
    control of shut-off valve actuator
    control of shut-off valve actuator
    LP

    Torque: 0 Nm - 5,000,000 Nm

    ... LP/LH pneumatic and hydraulic actuators for linear valves in double-acting or spring- return configurations to suit all valve sizes. Offering the advantages of compact ...

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    Rotork
    hydraulic valve actuator
    hydraulic valve actuator
    RH

    Torque: 0 Nm - 3,400 Nm

    ... heavy-duty actuators are a compact, economical and robust solution for quarter-turn valves that have a fairly constant torque requirement throughout the stroke and are designed to operate ball, butterfly, plug and other ...

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    Rotork
    hydraulic valve actuator
    hydraulic valve actuator
    Subsea

    ... scotch yoke and linear subsea actuator designs with ROV or diver operated facilities for both double-acting and spring- return applications. The Subsea range is designed to meet the stringent approvals ...

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    pneumatic valve actuator
    pneumatic valve actuator
    K-TORK

    Torque: 0 Nm - 18,300 Nm

    ... vane actuators are true rotary actuators that do not require the conversion of linear to rotary motion. The actuator is a very simple, highly accurate and reliable quarter-turn / rotary actuator ...

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    pneumatic valve actuator
    pneumatic valve actuator

    Torque: 8 Nm - 4,068 Nm

    ... acting and spring return. Plus, its hydraulic damper also has a dual acting and spring return function. In addition, it has a 100% and 50% extra travel stop limitation and a RC100 travel ...

    pneumatic valve actuator
    pneumatic valve actuator

    ... DeZURIK rotary diaphragm actuators are designed specifically for use on quarter-turn valves. The actuators are designed for on-off or modulating service in either a fail-open or fail-closed mode. Action ...

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