Actuators for valves

Linear hydraulic actuator

Our hydraulic linear actuator are for use for valves as stop valve or SDNR valve.
They are designed with fail-safe function, manual operation device and remote override function.

Product features:
• linear actuator
• single acting spring closed
• with manual emergency operation device
• easy manual opening without force
   of spring
• temp. submerged operation
• low maintenance
• compact design
• local position indicator
• low costs
• the actuators are produced in Germany
• satisfies all requirements by major
   approval authorities
• chemical nickel plated 35 µm

• electric limit switches IP 68
• electric limit switches Eex, IP 67
• proximity switches IP 68
• position indication by volume indicator
• position indication by pressure switches
• various control blocks
• electro-hydraulic aggregate

Hydraulic part-turn actuators

Our new hydraulic rotary actuators for 90°-quarter turn valves are designed by our own construction department and manufactured on our own. They are build for a long lifetime and maintenance-free operation.

The main advantages are:
• compact design and low weight
• constant torque-output
• modular design allows upgrade
   from hydraulic-acting to spring-acting
   and reverse
• various installation positions
• adjustable rotary limit
• no damage to oil pipes due to
   internal system piping
• same hydraulic connection over whole type series
• same hydraulic-control blocks for all sizes
• combined flanges acc. to ISO 5211
• NAMUR-connection for installation of all common limit switches /
   position indicators
• emergency handoperation through additional handpump
   via quick coupling at the control block
• SHA/DA-32 up to SHA/DA-63 with single piston,
   SHA/DA-70 with double piston

Furthermore our hydraulic actuators are available in following special designs:
• with limit switch boxes: e.g. IP67, IP68, Ex
• spring closed / spring opened
• with emergency handoperation by intermediate gear box
• with application-specific control blocks
• direct connection to hydraulic local power unit
• separate installation of the control block
• operation in medium

You are searching for furthermore designs, different materials, diameters, working pressures or temperature ranges ?

Please ask us !  We are pleased to help you.


Phone  +49 (0)481 903 0
Fax      +49 (0)481 903 290




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... also available:

Valves with hydraulic actuator with local power unit (LPU)

Valves with pneumatic actuator


Valves with electric actuator