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Marine davit systems by Fairbanks Morse Defense for launch and recovery operations

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.

TickCombines non-return and shut-off in one space-saving, manually controllable valve.
TickOperates in extreme conditions with shock qualification and robust marine-grade materials.
TickSimplifies servicing and installation with top-loaded parts and flexible configuration options.

Key features

TickAutomatic non-return with manual shut-off
TickShock-qualified for naval service
TickTop-loaded inline maintenance
TickConfigurable seats and connections
TickTemp range: -50°C to 150°C
TickPressure: up to PN 320
TickSizes: DN 6–100
TickMaterials: NAB or stainless steel

Specifications

Fluid Types

Fresh Water

Sea Water

Fuel Oil

Lubricating Oil

Hydraulic

High Pressure Air

Port Size (“)

0.25 to 4

Material

Nickel Aluminium Bronze (NAB)

Stainless Steel

Temperature Limits (°C)

-50 to 150
engine parts & service

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.

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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.

Request our commercial published parts list

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