the Original since 1956

Wey knife gate valves stand for reliability and precision and are well-known worldwide. They are manufactured by Sistag in Switzerland. This step-by-step tutorial shows how each of our valves is carefully assembled by our Swiss team.

Our knife gate valves are equipped with the “Original Wey Design”, a unique sealing system. We’ve continuously developed and perfected this innovation, which had a patent registered in 1956. That’s why our sealing system is still the market leader today. Wey knife gate valves can handle a variety of differential pressure scenarios and abrasive and corrosive materials, not to mention extreme temperatures. You can rely on them even under the most demanding conditions. At all times and for a long time.

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