VALVES FOR HIGHEST DEMANDS

High performance valves are our specialty. Thanks to decades of engineering experience and in-house production with an outstanding manufacturing expertise, we offer a wide range of products for demanding applications.

A Swiss innovation conquers the world

Wey products and solutions have been conquering the world ever since, and today stand for performance, reliability, quality and cost-effective solutions for knife gate and butterfly valves as well as water control gates.

Any application, anywhere in the world

Whether in mining, the pulp & paper or the food & beverage industries. Whether in wastewater treatment, oil & gas or chemical processing. Wey is the trusted name in the most demanding industries, all over the world.

There’s only one original

Often copied, but never equaled – ever since Joseph Wey’s invention and the launch of the Wey brand, Sistag has been setting standards worldwide.

With a patent registered in 1956, we revolutionized the design of knife gate valves forever. The engineer’s name: Joseph Wey. The Original Wey Design and the Wey brand were born.