Marine Butterfly Valve
Shock-qualified butterfly valve with fast shut-off, SIL3 safety, and zero-leakage performance.
Marine Butterfly Valve
The Marine Butterfly Valve is designed for fast, reliable shut-off in critical marine and submarine systems. With a compact, lightweight body and eccentric disc design, it enables low-torque actuation while delivering bidirectional zero-leakage sealing. Certified to SIL3 for functional safety and qualified for extreme shock loads, it ensures high survivability under emergency conditions. Available in double or triple offset configurations, the valve supports a wide temperature range from -253°C to 818°C and pressures up to ANSI Class 900. Engineered in materials including NAB, titanium, and super duplex, it offers robust performance in fuel, seawater, and cryogenic systems.
Delivers rapid emergency shut-off with reduced torque and zero-leakage in either flow direction.Ensures long-term reliability with SIL3 certification and proven shock resistance.Reduces space and weight requirements with a compact, high-performance design.Key features
Fast-acting emergency shut-offDouble/triple offset disc designShock-qualified for naval useSIL3 certified reliabilityZero-leakage bidirectional sealingLightweight, compact bodyTemp range: -253°C to 818°CPressure: PN 6–150 / ANSI 150–900Sizes: DN 50–4000Wide range of marine-grade alloysSpecifications
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Fluid Types |
Black Water Cryogenic Fresh Water Fuel Oil Grey Water Sea Water Water Liquid |
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Port Size (“) |
2 to 157 |
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Material |
Nickel Aluminium Bronze (NAB) Carbon Steel Stainless Steel Duplex Super Duplex Titanium Nickel Alloy |
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Temperature Limits (°C) |
-253 to 818 |
Parts & Service
Fairbanks Morse Defense offers an extensive portfolio of services to optimize performance, ensure reliability, and extend the life of your fleet – from the day its commissioned and for the many years that follow. Learn more about what our custom solutions can do for you.
Commercial Solutions
In addition to the defense industry, Fairbanks Morse Defense also works with the commercial industry. Our commercial customers can include municipal and nuclear power plants, hospitals, universities, and international stationary power applications.
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