Wey as a brand name is recognized and internationally protected. ln the industry, the name stands for Swiss quality, both with regard to the product and the support we offer. It is also synonymous with experience, competence, ﬂexibility and utmost reliability. This reputation of the Wey products is based on exceptional functionality and process safety, ease of maintenance and long service life. Since 1964, we have been operating in national and international markets under the name of SISTAG. During this time, the company has been responding continuously to the requirements of a growing and at the same time increasingly demanding customer base. With our Wey valve products, we are among the globally leading providers in this sector.