Bosch Rexroth revolutionizes subsea actuator technology

Rexroth will display a unique system for subsea actuation in booth #2805 at the Offshore Technology Conference (OTC) in Houston, Texas, from April 30th to May 3rd. The Subsea Valve Actuator (SVA) is an electro-mechanical actuator with a hydrostatic drive, uniquely designed to complete the range of traditional hydraulic and all-electric subsea actuators for subsea control and production systems. 

By combining the best features of electrohydraulic actuators and electromechanical actuators, Rexroth is revolutionizing actuator technology with the world’s first hybrid Subsea Valve Actuator. 

Optimized for manufacturing, the SVA is based on industrial-standard components that have been produced with the highest quality standards and lean production methods. With its modular design, users can easily configure according to their unique application requirements, without necessary costly redesign of their entire system. 

Highlights of the SVA include: 

• An energy efficient system, in accordance with the Rexroth 4EE standard, minimizing the required peak and stand-by electric power
• Compatible with Industry 4.0 technology, the SVA includes various integrated sensors for e.g. monitoring position, pressure, temperature 
• Cost-effective modular design using industrial components and lean production management processes 
• Environmentally-friendly set up with redundant pressure compensation and no fluid leakage 
• Up to 75 percent reduction in comparison to all-electric actuators available in the market 
• High availability and condition monitoring designed to operate up to 25 years with minimum maintenance 
• Independent safety control has Safety Integrity Level 3 capabilities

The SVA achieves the same performance in terms of safety, but with much higher reliability than hydraulic actuators, by also offering a simple electric interface like the all-electric actuators (without umbilicals for hydraulic fluid power).