LEDEEN Actuators

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LEDEEN Actuators

LEDEEN Actuators have provided exceptional valve automation performance to the oil and gas industry since 1948. We’ve since gained exposure to a wide range of operational conditions and accumulated extensive first-hand application experience, enabling us to provide field-proven solutions known to be fit for purpose and reliable.

We obtained valuable product knowledge through years of successful operations in challenging desert, arctic, offshore, and subsea applications. Relying upon this extensive global experience and applying it during the evaluation of every requirement is a commitment to best practices that benefits every customer working with Cameron.

LEDEEN Actuators Application
LEDEEN Actuators Application

Type

  • Quarter-turn actuators are used for on/off or modulating control of any ball, plug, or butterfly valve
  • Linear actuators are used for on/off or modulating control of any gate valve or rising stem ball valve

Reference

User Location Application
PTTEP PTTEP SIAM – Sirikit Oil field (S1) –
PTTEP offshore G1 (Erawan, Platong, Stun, Funan) Booster gas compressor package
PTTEP offshore G2 (Arthit, Bongkot) Booster gas compressor package
PTTGSP Gas Separation Plant – Rayong

Product

  • Hydraulic LEDEEN Actuators
    Core Series Torque or Thrust Outputs Pressure Range (Gauge) Temperature Range, degF [degC]
    Quarter-turn GS Series;
    SY Series    		 5,700,000 lbf.in [644,000 N.m] 145 to 3,000 psi [10 to 207 bar] –22 to 212 degF  [–30 to 100 degC]
    Linear LH Series 4,400,000 lbf [19,500,000 N] 145 to 3,000 psi [10 to 207 bar] –22 to 212 degF  [–30 to 100 degC]

    Features

    • All models available as double acting or spring return
    • Open and close travel stops, ± 3 degrees minimum
    • Local position indication
    • Suitable for SIL3 environments

 

  • Pneumatic LEDEEN Actuators
    Core Series Torque and Thrust Outputs Pressure Range (Gauge)  Temperature Range 
    Quarter-turn VA Series 9,700 lbf.in [1,100 N.m] 40 to 175 psi [3 to 12 bar] –22 to 212 degF [–30 to 100 degC]
    GS and SY Series 5,700,000 lbf.in [644,000 N.m] 40 to 175 psi [3 to 12 bar] –22 to 212 degF [–30 to 100 degC]
    Linear LD Series 4,400,000 lbf 40 to 175 psi [3 to 12 bar] –22 to 212 degF [–30 to 100 degC]

    Standard features

    • All models available as double acting or spring return
    • Open and close travel stops, ±3° minimum
    • Local position indication
    • Suitable for SIL3 environments

 

  • Gas-Over-Oil LEDEEN Actuators
    Core Series Torque or Thrust Outputs, lbf.in [N.m] Pressure Range (Gauge), psi [bar] Temperature Range, degF [degC]
    Quarter-turn GS Series;
    SY Series    		 5,700,000 [644,000] 145 to 1,500 [10 to 104] –22 to 212 [–30 to 100]
    Linear LH Series;
    GH Series    		 4,400,000 [497,000] 145 to 1,500 [10 to 104] –22 to 212 [–30 to 100]

    Features

    • All models available as double acting
    • Open and close travel stops, ±3° minimum
    • ASME/PED gas-over-oil pressure vessels with dipstick, filter, and adjustable speed controls
    • Suitable for SIL3 environments

 

  • Direct-Gas LEDEEN Actuators
    Core Series Torque or Thrust Outputs, lbf.in [N.m] Pressure Range (Gauge), psi [bar] Temperature Range, degF [degC]
    Quarter-turn GS Series,
    SY Series    		 5,700,000 [644,000] 145 to 1,500 [10 to 104] –22 to 212 [–30 to 100]
    Linear LD Series 5,700,000 [644,000] 145 to 1,500 [10 to 104] –22 to 212 [–30 to 100]

    Specifications

    • All models available as double acting
    • Open and close travel stops, ±3° minimum
    • Local position indicator
    • Suitable for SIL3 environments

 

  • Compact LEDEEN Actuators
    Model Temperature Range, degF [degC] Gauge Pressure Range, psi [bar]
    HS (Compact hydraulic) −22 to 185 [−30 to 85] 145 to 3,000 [10 to 207]
    CP (Compact pneumatic) −22 to 185 [−30 to 85] 40 to 160 [3 to 11]

    Unlike conventional scotch yoke actuators, compact LEDEEN actuator profiles are concentric with the valve stem, reducing the required installation space and enabling alternative piping options.

    Application-specific torque mechanism

    LEDEEN actuators have two different torque mechanisms available, enabling the most appropriate mechanism to be utilized for maximum efficiency.

    • High-pressure hydraulic applications: A small helical spline mechanism is used with a small piston diameter to generate high torque outputs.
    • Low-pressure pneumatic applications: The larger helical slot mechanism is combined with a larger piston diameter to generate an equivalent torque output.

    Independently adjustable travel stops

    For precise valve positioning, the actuators feature a patent-pending integrated adjustable travel stop subassembly. Valves can be accurately set to the closed position to ensure positive shut-off and set fully open to optimized process flow.

 

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