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SISTAG have been operating in the national and international valve-market since 1964, during which time, the company has responded continuously to the requirements of a growing and increasingly demanding customer base.

Their brand name ‘Wey’ is recognized Globally and is internationally protected. In the industry, the name stands for Swiss quality, encompassing the product and the support they offer. The reputation of Wey products are based on exceptional functionality and process safety, ease of maintenance and long service life.

The Wey products perform within a broad range of industries & applications. Whether mining, water treatment, food & beverage, chemical or petrochemical industry, biomass, cement or waste handling – whenever fluids, powder or slurries need to be controlled, companies can rely on Wey products.

Wey products comply with the highest standards of technology. With countless years of experience developing innovative designs, they have become recognized for unique solutions to complex valve problems. For this reason, they provide our customers from start to finish with satisfaction and a sense of security.