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.
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.