lEDEEN ACTUATORS

Cameron LEDEEN* actuators and control solutions have consistently provided exceptional valve automation performance to the oil and gas industry since 1948, when we introduced a robust product design based upon solid engineering principles with a commitment to continuous improvement. Each successive year was guided by those foundational principles, enabling us to gain exposure to a wide range of operational conditions and to accumulate extensive firsthand application experience.This resulted in the ability to provide field-proven solutions that are known to be fit forpurpose and reliable.

Linear Pneumatic Actuators

Linear pneumatic actuators are used for on-off control of any gate valve or rising stem ball valve using compressed air, natural gas, or nitrogen actuator supply. Piston actuator standard features

  • All model availability as double actingor spring return
  • Thrust outputs to 4,400,000 lbf [19,600,000 N]
  • Local position indication Suitability for SIL-3 environments

Available options

  • Mechanical jackscrew override
  • Hydraulic manual override
  • Spring-return direct gas configurations with hydraulic dampening
  • Special seals for low-temperature applications to −76 degF [−60 degC] and for high-temperature applications to 392 degF [200 degC]

Linear Hydraulic Actuators

Linear hydraulic actuators are used for on-off control of any gate valve or rising stem ball valve using a hydraulic actuator supply.

Standard features

  • All model availability as double acting or spring return
  • Thrust outputs to 4,400,000 lbf [19,600,000 N]
  • Local position indication
  • Suitability for SIL-3 environments

Available options

  • Mechanical jackscrew override
  • Hydraulic manual override
  • Spring-return direct gas configurations with hydraulic dampening
  • Operating pressure (gauge) to 5,000 psi [345 bar]
  • Special seals for low-temperature applications to −76 degF [−60 degC] and for high-temperature applications to 392 degF [200 degC]

Linear Gas Over Oil

Field of application For heating, cooling, condensing and evaporating. Typically used for high temperature and high-pressure duties, e.g. in power, chemical, petrochemical and sugar industries

Description A fully-welded, gasket-free heat exchanger combining highly efficient plates and strong vessel construction. The asymmetric and flexible design allows extremely low-pressure drop if required. Can be fully customised to meet individual needs

Material Plates: AISI 316L or most alloys
Vessel: AISI 316L or carbon steel
 Temperature -200 – 900°C (-328 – 1,652 °F)

Pressure -1 – 60 bar gauge (-14 – 870 Psi)

Transmission area/duty Up to 8,000 m² per unit (86,111 ft²)

Maintenance access Full accessibility for cleaning and inspection without removal of piping. Further cleaning by the circulation of cleaning fluids (CIP)

Linear Subsea

Linear subsea actuators are used for on-off control of any subsea gate valve
using a hydraulic actuator supply.

Standard features

  • Availability as double acting or spring return
  • Thrust outputs to 4,400,000 lbf [19,600,000 N]
  • Pressure compensation for deep applications
  • 100% RX and PT welds
  • No external tie rods or tubing

Pneumatic Control Manifold

Low-pressure pneumatic controls are used for local, remote, or automatic
control of any low-pressure pneumatic actuator.

Standard features

  • Compact manifold design
  • SS 316 construction
  • High flow capacity
  • Accommodation of multiple solenoid brands
  • Approval to NEMA and Atmosphères Explosibles (ATEX)

 

Hydraulic Self-Contained Controls

Hydraulic self-contained controls are used for providing a reliable valve shutdown capability when an external power source for the actuator is either not available or not dependable.

Standard features

  • Model availability with 3,000- and 5,000-psi gauge pressure outputs
  • Corrosion-resistant anodized aluminum with stainless steel internals
  • Manual arming valve with bright-red-colored local emergency shutdown(ESD) trip function
  • Thermal compensation for high- and low-pressure circuits
    Independently adjustable pilot valves for pressure sensor high (PSH) and pressure sensor low (PSL)

 

Quarter-Turn Pneumatic

Quarter-turn pneumatic actuators are used for on-off or modulating control of any ball, plug, or butterfly valve using compressed air, natural gas, or nitrogen actuator supply.

Standard features

  • Availability as double acting or spring return
  • Torque outputs to 9,700 lbf.in [1,100 N.m]
  • Forged steel body, piston, and end caps
  • Steel cylinders with nickel-plated ID
  • Symmetric yoke

Quarter-Turn Pneumatic

For on-off control of any subsea ball, plug, or check valve in a submerged environment beyond 500-ft [152-m] water depth.

Standard features

  • Availability as double acting or spring return
  • Torque outputs to 3,600,000 lbf.in [400,000 N.m]
  • Scotch yoke mechanism
  • Pressure compensation for deep applications
  • 100% radiographically and penetrant-tested (RX and PT) welds
    No external tie rods
  • Open and close travel stops, ±5° minimum
  • Local tactile position indicator
  • Spool piece with adjustable position locators

Quarter-Turn Gas Over Oil

Quarter-turn gas-over-oil actuators are used for on-off control of any
natural gas transmission ball or plug valve using a high-pressure natural gas or nitrogen actuator supply.

Standard features

  • All model availability as double acting
  • Torque outputs to 5,700,000 lbf.in [644,000 N.m]
  • Open and close travel stops, ±3° minimum
  • Local position indication
  • American Society of Mechanical Engineers (ASME) Pressure Equipment
  • Directive (PED) gas-over-oil pressure vessels with dipstick, filter, and adjustable speed controls

Quarter-Turn Direct Gas

Quarter-turn direct gas actuators are used for on-off control of any natural gas transmission ball or plug valve using a high-pressure natural gas or nitrogen actuator supply.

Standard features

  • All model availability as double acting
  • Torque outputs to 5,700,000 lbf.in [644,000 N.m]
  • Open and close travel stops, ±3° minimum
  • Local position indication
  • Hydraulic manual override with reservoir filter, dipstick, and adjustable speed controls