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We are dedicated to supplying the highest quality valves. Discover our solutions
Valve Actuators
Linear: Diaphragm Actuators

Linear: Diaphragm Actuators

Here you can learn about how diaphragm linear valve actuators work, their key advantages, technical specifications, and typical industry uses - and browse our full range of products.

How do linear: diaphragm valve actuators work? 
Diaphragm actuators use compressed air or hydraulic pressure applied to a flexible diaphragm to create linear motion. This movement directly opens or closes the valve stem, providing accurate, smooth control for modulating and on/off service.
Advantages of linear: diaphragm valve actuators...
• Precise modulating control
• Compact, simple construction
• Intrinsically safe for hazardous areas
• Low maintenance
Technical Parameters:
Pressure Ratings
Dependent on valve design - supports: PN10, PN16, PN25, PN40, PN63, PN100, CL150, CL300, CL600, CL900, CL1500, CL2500
Temperature Range
Typically –20 °C to +80 °C Extended‑temperature models: –40 °C to +120 °C (Valve limits may differ)
Size Range
Suitable for valves DN15-DN600 (½″–24″)
Materials
Carbon steel, stainless steel, aluminium, elastomer diaphragms (EPDM, nitrile, fluoroelastomer)
Industry Application:
EFW
Oil & Gas
Power
Media Type:
Water
Gas
Steam
Oil
Chemicals

View products

View products

Multi-Spring Diaphragm Pneumatic Actuator Type P1/R1
Polna®
Overview:
Industry Use:
Nuclear
EFW
Oil & Gas
Power

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Where deep industry insight meets cost-effective, reliable valve solutions. Contact us today to streamline your supply chain and boost your performance.

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