For us, service is a question of attitude.

As a manufacturer, we know our products like no other. That's why we are also there for you for repair requests after the sale. We will never be 100% satisfied, unless you are too.
Repairs
With our own production plant in the heart of Switzerland, we can react quickly if something does not work as planned.
You can easily repair minor malfunctions yourself. Take a look at our troubleshooting videos at weyvalve.com for instructions.
Troubleshooting VideosVisit the
Sistag site
We stand 100% behind what we do. See for yourself and visit our Swiss Sistag site in Eschenbach LU.