Valve Industry

We supply valve spindle bellows with high pressure resistance, leak tightness, motion absorption, and long service life for the valve-gear industry. These are available made of special materials, such as Hastelloy, Inconel or Incoloy as well. On request, we also validate the performance of our components through load cycle tests under operating conditions.

Witzenmann is a certified manufacturer of valve spindle bellows that are used for applications in nuclear power engineering.


  • Stainless steel (321, 316Ti, 316L)
  • Inconel 625, Incoloy 800 /825
  • Hastelloy C276 / C22
  • Titanium


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