We are innovators and facilitators – always have been, always will be

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We are a family-owned company. That shapes our traditions and the way we think and act. We have been setting standards in the valve industry for over 50 years. Because we understand what moves people and satisfying their needs is our priority; working together to learn new things, find new solutions, and achieve unique results that inspire. Now and in the future.



Shape the future with us. Ours and your own.

We are always evolving and looking for new talent. Whether it’s in product development, production, service or sales, we have plenty of exciting jobs and career opportunities to offer, including for those just starting out in their first job or for apprentices.

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Whether they come in the form of knife gate valves, butterfly and check valves or water control gates, isolation valves are our expertise. We combine engineering skills with exceptional manufacturing know-how. Our definition of performance: the highest level of quality, which stands the test of time.

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 Take a look behind the scenes

From the initial idea through to the installation.

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New at Sistag

Valve World Expo 2022

Three exciting days at the trade fair with great conversations, numerous reunions and new acquaintances are behind us. A big thank you to everyone who visited us at our booth!

Valve World 2022

Day 1 at Valve World 2022

Promising start on the first day of Valve World Expo in Düsseldorf, Germany. Looking forward to the next two days here.

Lippuner symposium 2022

Lippuner symposium

Last week we were present as exhibitors and participants at the Lippuner Symposium in Baden. Once again an exciting day full of interesting technical presentations and great conversations.

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