Actuators
Actuators are industry’s quiet workhorses. They control valves, dampers and process equipment in thousands of plants – often going unnoticed until they fail. Hans Buch supplies electric, pneumatic and hydraulic actuators, along with advice on selection, sizing and integration.
A valve is only as good as what opens and closes it
The choice of actuator type has a significant impact on operational reliability, energy consumption and maintenance costs over a plant’s lifetime. We help you navigate:
- Fail-safe requirements – should the valve open or close in the event of a power failure?
- Electric vs. pneumatic vs. hydraulic – which is right for your application?
- Torque requirements and stroke length – is the actuator correctly sized?
- Control signals and communication – 4-20 mA, on/off, Modbus, HART or profibus?
- We advise on which gas types are relevant to your location and size a system that actually works in your specific environment.
Actuator types we supply
Electric actuators For applications requiring precise positioning, variable control and minimal maintenance. Suitable for building management, process plants and HVAC.
Pneumatic actuators Fast, robust and suitable for process plants with an existing compressed air supply. Available in spring-return and double-acting versions.
Hydraulic actuators For heavy-duty applications requiring high forces – sluice systems, heavy-duty valves and plants with specific environmental requirements.
Rotary actuators For ball valves, butterfly valves and other valve types requiring 90° or 180° rotation.
From a single product to a complete valve package
Hans Buch supplies more than just the actuator. We can supply it as a complete unit, mounted and configured on the valve – ready for installation. We work with leading manufacturers to ensure compatibility and correct sizing.
Typical industries and applications:
- Marine and offshore – saltwater-resistant solutions with marine approvals
- Water and wastewater – robust solutions for outdoor and submerged environments
- Oil, gas and energy – Ex-approved actuators for critical processes
- District heating and utilities – reliable control of the distribution network
- Chemical industry – corrosion-resistant materials and versions approved for the process media
Contact us – EN
We usually reply within 1–2 working days.