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

Prospekt Hydraulikstationen

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