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    We partner with Carter Process Control®, supplying specialist replacement valves.

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    We partner with Hels®, delivering advanced control valves and actuators.

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    We partner with RK Instruments®, providing precision flow and instrumentation solutions.

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    We partner with Carraro®, providing robust valve solutions built on Italian engineering.

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    We provide independent, accredited testing to verify performance and safety.

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We are dedicated to supplying the highest quality valves. Discover our solutions
Safety Valves
Single Spring

Single Spring

Here you can learn about how pilot operated safety valves work, their key advantages, technical specifications, and typical industry uses - and browse our full range of products.

How do single spring valves work? 
A single spring safety valve uses an adjustable spring to hold the valve closed until system pressure reaches the set limit. When pressure exceeds this point, the spring compresses, allowing the valve to open and release excess pressure.
Advantages of single spring valves...
• Reliable over‑pressure protection
• Simple, proven design
• Adjustable set pressure
• Fast opening and closing action
Technical Parameters:
Pressure Ratings
PN10, PN16, PN25, PN40, PN63, PN100, CL150, CL300, CL600, CL900, CL1500
Temperature Range
Typically –29 °C to +400 °C (material dependent)
Size Range
DN15–DN300 (½″–12″)
Materials
Carbon steel, stainless steel, bronze, nickel alloys
Industry Application:
Nuclear
EFW
Oil & Gas
Power
Media Type:
Water
Gas
Steam
Chemicals

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