Ledeen Actuator

Compact Actuator and Controls

LEDEEN HS and CP compact actuators—some of the smallest actuators available on the market—save valuable space on a production platform or FPSO vessel when installing automated valve packages within the piping system.

Ideal solutions for space-constrained installations
Unlike conventional scotch yoke actuators, LEDEEN compact 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.

For high-pressure hydraulic applications, a small helical spline mechanism is used with a small piston diameter to generate high torque outputs.
For low-pressure pneumatic applications, the larger helical slot mechanism is combined with a larger piston diameter to generate an equivalent torque output.

Hydraulic Actuators and controls

Quarter-Turn

Typical application: Quarter-turn hydraulic actuators are used for on/off or modulating control of any ball, plug, or butterfly valve utilizing hydraulic actuator supply.

Linear

Typical application: Linear hydraulic actuators are used for on/off or modulating control of any gate valve or rising stem ball valve utilizing a hydraulic actuator supply.

Specifications

Standard 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

Pnuematic Actuators and Controls

Quarter-Turn

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

Linear

Typical application: Linear pneumatic actuators are used for on/off or modulating control of any gate valve or rising stem ball valve utilizing compressed air, natural gas, or nitrogen actuator supply.

Specifications
Standard 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

Ledeen Series DiM Electric Actuators

LEDEEN Series DiM electric actuator for on/off or modulating control of any multi-turn, partial turn, or linear valve in oil and gas applications.

Benefits
Developed and built for use in the oil and gas industry, based on field-proven technology
Partial-turn, multi-turn, and linear configurations available for use with any valve type
Easy system integration with open fieldbus communication interfaces
Reduced-maintenance design
Constant self-monitoring for reduced errors
Specifications
Standard Features

Enclosed Motor – Totally enclosed, not ventilated (TENV) motor
Handwheel – Operation at any time without declutching mechanism with electric priority
Transmission – Low-wear, planetary gearbox for long life
Controls/Sensors – Quick, non-intrusive settings with graphic LCD for clear, easy-to-read information
Electrical Connection – Plug-and-socket connector for ease of termination of power and control wiring
Valve Connection – Connections available for all types of valves, easily interchangeable, and connections according to international standards
Temperature Range Standard: -25° C to 60° C (-13° F to 140° F) or Low-Temp: -55° C to 40° C (-67° F to 104° F)

System Integration

The integration of the LEDEEN electric actuators into a control system is possible via a multitude of fieldbus connections or via a free-configurable, hard-wired interface. All fieldbus devices can be delivered with the common redundancies, to help enhance system safety and reliability.

SIMA Master Station

System Integration -The SIMA master station solution integrates field devices, like actuators, into an automation environment and supports a variety of protocols such as PROFIBUS DP and Modbus RTU.
Data Concentrator – In addition to the essential feedback information, our LEDEEN DiM series electric actuators provide a wide variety of data that can be used by the SIMA master station to quickly and easily diagnose the system with reduced stressing.
Commissioning Tool – SIMA also functions as a standalone automation system, allowing the actuator to be operated and commissioned autonomously from a higher automation system. Actuator and communication parameter settings can be performed and tested.
Redundant Security – To allow for enhanced safety operations, the SIMA master station has been designed as a highly redundant unit with both the master unit and the cables being redundant in case of a failure.

Subsea Actuators and Controls

LEDEEN hydraulic subsea actuators are specifically designed for shallow-water and deepwater applications. Both actuator types, shallow-water and deepwater series, can operate with a supply pressure up to 3000 psig (207 barg).
Specifications
Standard Features

Available as double acting or spring return
Open and close travel stops, ± 3 degrees minimum for
Shallow-water series and ± 5 degrees minimum for deepwater series
Local position indication
Scotch-yoke mechanism
Available Options
Manual override
ROV override
MICRO SWITCH™ for open/close indication
Position transmitter for 0% to 100% travel indication

Gas-Over-Oil Actuators and Controls

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

Linear

Typical application: Linear gas-over-oil actuators are used for on/off control of any natural gas transmission gate valve utilizing a high-pressure natural gas or nitrogen actuator supply.

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

Self-Contained Control Systems

Low-Pressure Pneumatic Control System

For local, remote, or automatic control of any low-pressure pneumatic actuator.

Hydraulic Self-Contained Controls

For providing a reliable valve shutdown capability when an external power source for the actuator is either not available or not dependable.

High-Pressure Gas Controls

For local, remote, or automatic control of any high-pressure gas actuator utilizing a natural gas or nitrogen supply.

Hydraulic Power Units

Provides a reliable high-pressure hydraulic output as a power source for hydraulic actuators.

Electronic Linebreak Controls

For monitoring pipeline operating conditions to quickly detect pressure trending toward abnormally high or low rate-of-drop values and accurately monitor those trends for an automatic shutdown response when pre-established set points are reached.

Position-Monitoring Switches

For remote indication of any rotary requirements; primarily for quarter-turn valve actuators