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

Discover our job profiles
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. Our employees take you with them - click through their stories.
JOBPROFILE STORIESWhether 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.
From the initial idea through to the installation.
Learn moreNew at Sistag
Swiss Export Best Practice
Sistag goes to Singapore. What prompted us to take this big step three years ago will be reported at the swiss export best practice event on April 15, 2026.
Automated manufacturing
Nearly 80 of these machine pallets are in use in our Fastems multi-level system at our production site in Switzerland. Thanks to them, we can produce around the clock—even at night and without personnel.
Budding Wey experts
The team at ARA Neugut near Zurich is well on its way to becoming specialists in knife gate valves. In a full-day workshop at the Sistag factory, participants learned everything they need to know about independently setting, installing, maintaining, and repairing Wey valves.