HMS Duncan (D37), a T45 Destroyer, underway in the Mediterranean under a partly cloudy sky.
Submarine and destroyer at sea

Meeting industry challenges

Engineered for naval marine environments

Engineered for both surface ships and submarines, our valves resist corrosion from seawater, withstand constant vibration, and handle high shock loads. Each solution is low maintenance, compact, and rigorously tested to meet naval defence standards.
Close-up of double ball hull valves manufactured by IMI Truflo Marine.

Industry expertise

Critical naval valve solutions


Naval surface ships and submarines need advanced valve solutions for safe operations in harsh marine environments. We design our marine valves to support essential systems seawater intake, hull isolation, high pressure air, and fuel systems. This helps ensure the safety of your people, operational efficiency, and durability under extreme conditions.

Hull isolation

Ensures watertight boundaries and structural integrity, protecting your vessels from flooding while maintaining safety in demanding marine operations.

Seawater systems

Manages seawater intake and discharge for cooling, ballast, propulsion, and critical system support, ensuring you achieve reliable vessel performance.

High pressure air

Supports critical functions like propulsion, emergency systems, and equipment operation with robust and reliable air control solutions.

Fuel systems

Regulates fuel supply for your marine propulsion and auxiliary systems, delivering safe, efficient energy management in all operating conditions.

A double ball hull valve from IMI Truflo Marine, featuring dual actuator assemblies and a robust design for critical naval marine applications.

Specialist valves for critical marine applications

Cryogenic, butterfly, globe, gate and hull valves, plus non return, block and bleed, relief and exhaust valves all built for demanding marine systems and harsh conditions.
Underwater explosion with large vertical plume of water and debris near shoreline under cloudy sky.

Environmental testing

Valve tests for extreme conditions

IMI valves are tested to meet the toughest marine standards, including MIL-STD-810, DEF-STAN 00-35, and STANAG 4141. From shock and vibration to corrosion and noise, our testing ensures long-term reliability, durability, and stealth performance for submarines and surface ships.

Engineering the future together

Looking for the perfect flow control solution? Our experts specialise in marine applications, providing tailored solutions to meet your unique needs. Let us help you achieve optimal performance, efficiency and safety.