The SSEAC®, an electromechanical subsea actuator from WITTENSTEIN motion control GmbH, is an innovative solution for actuating choke and other valves in subsea applications. Rated for a service life of at least 25 years, this actuator controls the continuous flow of gases and liquids at a depth of up to 4000 meters. The complex hydraulic systems traditionally chosen for this purpose are now a thing of the past: instead, the SSEAC® has two redundant 24 V motors that drive the actuator’s planetary gearbox and enable precise rotary adjustment of the valves. The subsea actuator is designed for use in offshore oil and gas extraction, systems for injecting CO2 into the seabed, or the production, transport, and storage of green hydrogen at sea.
The Subsea division at WITTENSTEIN motion control (WMC) has been offering subsea drive systems and electric subsea actuators for deep-water applications for more than 20 years now.
SSEAC® subsea actuator: Continuous flow control for deep-sea valves The SSEAC® is a subsea actuator from WITTENSTEIN motion control that is based on an electromechanical principle and features a redundant 24 V power supply.
Beyond highly reliable and robust control electronics, the SSEAC® integrates various sensors for monitoring the subsea actuator’s condition. Absolute positions, torques, and other operating data, which can be used for remote online checks of the actuator condition, are continuously recorded. Flow control precision can be tracked at any time in this way and the deep-sea drive module’s availability optimized over its entire service life.
The electromechanical SSEAC® subsea actuator allows valve control and operation at great depths. However, subsea systems of this kind are no longer operated solely for the purpose of extracting oil and gas. In the context of industrial and environmental decarbonization, applications for subsea storage of carbon dioxide or for producing green hydrogen at sea are other promising and sustainable fields of use.