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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 60 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.

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 From January 2025

New production location in Ettlingen.

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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

A Fine Vintage: Sistag 2026

Every two years at Sistag, it’s time to step away from the daily grind and embark on an adventure together! Together with the entire Sistag family, partners, and retired colleagues, we go on a trip and spend a whole day together. This year, we had the chance to explore the Baden Wine Route and our new location in Germany.

Renewable Gas Show 2026

Renewable Gas Show

Renewable gases are becoming increasingly important in the transition to a more sustainable energy supply. At the Renewable Gas Exhibition in Valladolid, our Spanish sales partner Synerkos presented Wey knife gate valves as a reliable solution for demanding biogas applications.

VSUD Board Meeting

Hosting the VSUD

At first glance, doing business in Germany seems familiar for a Swiss company. But it is precisely this perceived familiarity that presents challenges that are often underestimated. This makes the exchange within the Association of Swiss Companies in Germany (VSUD)—which we hosted last week—all the more valuable.

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