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.

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

New sales partner Sycomore

New sales partner in France

We are happy to welcome our newest Wey sales partner Sycomore on board. As an expert in biogas applications, Sycomore already knows Wey valves inside out and will be our official representative in France.

Career Day 2023

Career Day

As part of the career week at Eschenbach school, we were able to show eleven students what we do every day. From drawing our products on the computer to programming the automated production machines to assembling our valves.

Customer Survey 2023

Sistag customer survey

More than 500 customers around the world took part in our survey and gave us feedback on our service and products. In addition to top marks for the competence and friendliness of our team, we also received useful suggestions on how we can improve further. Many thanks to all participants for their valuable feedback!

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