Electro-hydraulic actuators of the EHS-D3 series
The electro-hydraulic part-turn actuators of the EHS-D3 series combine electrical and hydraulic technology in a self-contained plug-and-play solution. With an integrated power unit and torques of up to 50,000 Nm, they operate powerfully, maintenance-free, and completely without external hydraulic lines.
Plug & Play – ready-to-use actuator solution for part-turn valves.
Electro-hydraulic (part-turn) actuators of the EHS-D3 series combine the advantages of electrical and hydraulic drive technology and are prepared for immediate commissioning. A combination of the EHS Power Pack paired with a hydraulic STK actuator enables a powerful unit that is electrically controlled and generates torques of up to 50,000 Nm. It contains a closed hydraulic system that operates without external hydraulic lines and can be used flexibly thanks to its maintenance-free design.
The electrical connection can be established via discrete signals as well as via a bus connection, making it suitable for Industry 4.0 and IoT applications.
Whether ball valve or butterfly valve, dry or wet installation, the EHS-D3 is available in a variety of versions.
Special Features
Teaser on the subject of electro-hydraulic actuators from the EHS-3 series, which we still need to revise:
Functional safety for SIL 2 according to IEC 61508
Ready-to-use electro-hydraulic double-acting actuator
Constant torque up to 50,000 Nm
Swivel angle 90°
Electrically powered, without external hydraulic lines
Usable from -25°C to +70°C, low-temperature version: -55°C
Electric limit switches / position indicator
Integrated hydraulic manual override (hand pump) possible
Permanent bus control loop connection possible (PCL)
ATEX explosion protection class on request
“Submerged” on request
Degree of protection IP 67 (IP 68 on request)
Double-sided adjustable end positions (for ball valves)
Can also be used as a remote power pack
Advantages
Self-contained actuator with integrated hydraulic power unit
Only electric cables are required
Enormous cost savings
Small size – high torque
Lower service and maintenance costs
Low oil volume
Low noise level
High energy efficiency
Downloads
Electro-Hydraulic EHS System: Brochure
EnglishOverview of the electro-hydraulic EHS system and its actuators. (PDF, 1.6 MB)
Inquiry Form: EHS Actuators
EnglishFillable form for requesting electro-hydraulic EHS actuators. (PDF, 294 KB)