About Wey

Wey Valve, a brand of Sistag AG headquartered in Eschenbach, Switzerland, is a manufacturer of knife gate valves, butterfly valves, check valves, and water control gates/sluice gates. Founded in 1956, the company (originally known as Sistag) has over 65 years of experience in valve manufacturing. Sistag AG is a future-oriented family business that sets standards on the national and international valve market. The company's mechanical production division employs approximately 180 people who produce between 25,000 to 30,000 knife gate valves annually. Wey valves are sold and serviced through offices on multiple continents including the Americas (USA, Canada, Mexico, Chile, Peru), Europe (Switzerland, Germany, France, Spain, UK, Russia, Turkey), Asia (China, India, Singapore, Israel), and Oceania (Australia, New Zealand). Primary industries served include plastics processing, wastewater treatment, water infrastructure, mining, and pulp & paper. The Wey brand is internationally recognized and protected.