Company profile

Outstanding solutions that last

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As a future-oriented family business with Swiss roots, we have been setting standards on the national and international market under the name Sistag since 1964 – with skillful engineering and the highest level of manufacturing expertise.

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For us, quality is key

With every single workpiece, we pay attention to the smallest detail. From the very first conversation, we develop outstanding solutions for our customers that will last and continue to meet future needs – whether in mining, in the pulp and paper or food and beverage industry, in wastewater treatment, or in biogas/chemical plants, not to mention numerous other areas of application. All around the world.

For us, quality is key – in order to develop solutions that meet the highest demands thanks to their precision and durability. This means we are also audited by external organizations.


History A Future with a Heritage


Johann Sidler opens a mechanical workshop in Eschenbach.


Hans Sidler and Hans Stalder found Sistag Maschinenfabrik Sidler Stalder AG in Eschenbach, Switzerland.


Wey is registered as an international trademark.


Wey Valve Inc. in Nettleton (MS), USA, is founded in response to contemporary market demands.


Hans Jörg Sidler takes over management of the company.


With the establishment of Sistag GmbH in Muggensturm, Germany, Sistag AG strengthens its presence on the market.


The «Hall 100» building represents a milestone in the company’s history, opening up an additional 1,420 m2 of production and storage space.


Sistag und Wey join forces under the name Wey.


Sistag celebrates its 50th anniversary.


The opening of a new 3,700 m2 production facility in the USA marks a new chapter in the history of the company, which extends back more than 50 years.


Samuel Sidler takes over from Hans Jörg Sidler as CEO.


Sistag Pte Ltd is established in Singapore. From this location, customers in the Asia-Pacific market will receive even better support in the future.

Contact us for your tailor-made solution.

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