IMI NH

Meeting demanding nuclear valve requirements

The IMI NH advanced valve technology range has been keeping next generation nuclear power reactors operating for over 60 years.

Skilled worker inspects control valve at IMI facility in Kobe, ensuring precision and safety.
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Industry leading solutions

The IMI NH valve line is an extensive range of products for CANDU nuclear reactors across the world.


Our Products
Our nuclear valves are used in 100+ global nuclear facilities for PWR, BWR, CANDU reactors, waste management, and decommissioning. Our technology meets ASME III and RCC-M nuclear class 1-3 design rules, with a trusted reputation for quality and reliability
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Nuclear expertise

Isolation of potentially lethal media is crucial in pressurised heavy water, heavy water, pressurised water, gas cooled and boiling water nuclear reactors. The IMI NH valve range is  found in critical nuclear applications like emergency water cooling, primary heat transfer systems and fuelling machines.  Robustly designed, this valve technology has a service life of 40 years and is manufactured in accordance with the ASME III Nuclear Code.


Key Technologies

Bellows sealed globe valves

The bellows sealed globe valve is a true hermetic valve that comprises internal bellows and seal welds on all external joints that prevent any release of harmful chemicals. Manufactured with Inconel 625 alloy the bellows feature a multi-ply, welded seam construction designed for longer service life and shorted maintenance time.

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Key Technologies

Three-piece ball valves

Its three-piece design means that any part of the valve can be maintained without any need to remove it fully from the line. It has a polished ball that provides tight shut-off while the floating ball preloads the valve seat. Line pressure provides the force required to create a bubble-tight shut-off at all pressure levels.

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Czech team make sure valve is tested and perfect for despatch

Aftersales support

IMI’s dedicated global aftersales support team is made up of over 200 expert technicians. They provide field service, spare parts, repairs, upgrades and long-term service contracts to ensure that our customers’ processes function safely and efficiently, for the full life cycle of the facility.


Services
IMI engineer poses at regional manufacturing facility

Tap into the valve and actuator expertise of our dedicated team

Find your perfect flow control solution.

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