Sempell draws from over 140 years of experience in the design and manufacture of high performance valves for regulating and controlling media under high pressure and extreme temperatures in all situations.
With this know-how and manufacturing plant in Germany, Sempell develops reliable isolation-, non-return-, turbine bypass- and startup control valves for the latest generation of high efficiency supercritical and ultra-supercritical power plants.

The range of safety products includes specialty high-pressure safety valves, high-flow safety valves, and a complete range of controlled safety relief valves for the most challenging applications.

Sempell provides valves for the nuclear industry and has pioneered new technology for pilot-operated pressurizer safety relief valves for new generation nuclear reactors.

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SEMPELL Control Valves
SEMPELL Gate, Globe, Check valves
SEMPELL Pressure Relief Valves


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Joachim Nyqvist
Tommi Penttilä
Fredrik Andrée
Frank Kirk Hansen
Kenn Gerwien
Slawka Pedersen