Expertise and highly-developed skills in the design and manufacture of high-performance valves

Daher is the market leader in high-performance valves for nuclear industry applications (Vanatome brand valves) and the energy sector (Verdelet brand valves), utilized worldwide.

We design, qualify and manufacture a broad range of products that meet demanding requirements for installation in primary and secondary circuits of the world’s largest nuclear installations, in nuclear propulsion systems used on French Navy vessels, in advanced research technologies and the development of new reactor types (fast-neutron reactors/FNRs, small modular reactors/SMRs), as well as in hi-tech equipment for industry (oil and gas, petrochemical, chemicals, power generation, hydrogen, cryogenic).

  • 40

    Personnel dedicated to engineering

  • 50%

    The percentage of production focused on exports

  • 1,000

    Valves manufactured every year

  • 30

    Patents filed in 40 years, including approximately 10 that are still active

Our added value

  • A global service

    A global service that reduces product lifecycle costs and improves equipment operational safety.

  • A comprehensive range of products

    A comprehensive range of products covering all technologies required for all nuclear and industrial systems.

  • A substantial experience

    Considerable experience in design and qualification, along with maintenance and technical support services.

Our offer



Daher has been driving innovation forward in the nuclear valve industry for nearly 40 years. Its valves have applications throughout this market, from nuclear power plants to defense, research reactors, new fourth-generation reactor types, fusion, SMR, decommissioning, and the fuel cycle from enrichment to retreatment.



Daher offers an extensive range of valves that are engineered to meet the most demanding requirements of leading energy sector companies that work in oil and gas, conventional power plants, desalination, the manufacturing industry, renewable energies and cryogenics.

Testimonials / Use cases