WFIT welded stainless steel filters with threaded connections are designed to protect any industrial equipment located downstream in the compressed air system. They are used for the filtration of compressed air as well as many other gases where the risk of corrosion is very high or where a stainless steel housing is specifically required. The compressed air quality required by ISO 8571-1 can be achieved with 6 different grades of filter element (B, P, R, M, S and A). External condensate drains (optional) must be used for efficient condensate drainage. Fluid group 1 on request.