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Since January 2016, the Newman Hattersley products have been manufactured by IMI Bopp & Reuther using the original Hattersley Newman Hender and Newman Hattersley Ltd. drawings. IMI Bopp & Reuther has been a global supplier of valves into the Nuclear Power Market for over 50 years. They have implemented and maintained nuclear certifications including CSA N285.0; ASME V, N, NV, UV and NPT; CSA Z299; ISCIR; KTA; SCC.

IMI Newman Hattersley has over 60 years’ experience working with nuclear plants around the world. We have developed proven, advanced valve technologies to meet the demanding performance and safety requirements of next-generation nuclear power reactors. Based in Canada, IMI NH supplies a range of products for CANDU nuclear reactors around the world.

Fast Facts

  • Founded: 1955
  • Joined IMI: 2006
  • Installed base: 19,000+ valves / 1,300+ other products
  • Locations: Canada

Critical Applications



IMI NH valves can be found on applications on the nuclear side of PHWR, PWR, GCR and BWR nuclear reactor designs, where isolation of potentially lethal media is essential. Our valves are successfully working in Emergency Cooling Water systems, Primary Heat Transfer systems and Fuelling machines.


The high-performance valves have a robust design, with a service life of 40 years or more. As most applications are inside containment, they are manufactured in accordance with the ASME III Nuclear Code.