Marine Screwdown Non Return Valve
Shock-qualified valve combining non-return and shut-off functions for critical marine applications.
Marine Screwdown Non Return Valve
The Screwdown Non Return Valve provides compact, dual-function flow control in demanding naval systems. Designed to automatically prevent reverse flow, it also features a manual override for shut-off when needed. Shock-qualified for extreme conditions and built with top-loaded, inline-serviceable components, it supports long-term operation in high-pressure, high-integrity systems. Available in nickel aluminium bronze and stainless steel, it suits a wide range of fluids including seawater, fuel, hydraulic oil, and high-pressure air. With pressures up to PN 320 and temperature tolerance from -50°C to 150°C, it’s ideal for submarines and surface ships alike.
Combines non-return and shut-off in one space-saving, manually controllable valve.Operates in extreme conditions with shock qualification and robust marine-grade materials.Simplifies servicing and installation with top-loaded parts and flexible configuration options.Key features
Automatic non-return with manual shut-offShock-qualified for naval serviceTop-loaded inline maintenanceConfigurable seats and connectionsTemp range: -50°C to 150°CPressure: up to PN 320Sizes: DN 6–100Materials: NAB or stainless steelSpecifications
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Fluid Types |
Fresh Water Sea Water Fuel Oil Lubricating Oil Hydraulic High Pressure Air |
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Port Size (“) |
0.25 to 4 |
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Material |
Nickel Aluminium Bronze (NAB) Stainless Steel |
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Temperature Limits (°C) |
-50 to 150 |
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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