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

Learn more

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.

Job Vacancies

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.

see our products

 Take a look behind the scenes

From the initial idea through to the installation.

Learn more

New at Sistag

Swiss Export Jubiläum

45 years membership at swiss export

We are very pleased to have been a member of swiss export since 1977 - making us the longest-standing association member ever. On this occasion, our CEO Samuel Sidler was interviewed for the swiss export journal.

Explosion Protection Day Balsthal 2022

FireEx Explosion Protection Day Balsthal

We are proud sponsor of today's FireEx Explosion Protection Day in Balsthal, Switzerland. In addition to exciting presentations on explosion protection, you can see our "SpeedWey" high speed isolation valve HSI in action during the breaks.

Revision Fastems system

Revision of our FMS system

In order to manufacture cutting-edge technology, you need cutting-edge technology in machining. Our flexible manufacturing system from Fastems has therefore been thoroughly overhauled in the past weeks - with the active support of our production team. All electronic components and motors were replaced and the software got an upgrade. This way we are well equipped for the years to come.

All News




Contact us for your tailor-made solution.

Please use a modern web browser