Shut-off and regulating fitting for flows of corrosive and/or abrasive substances

摘要

Shut-off and regulating fitting for flows of corrosive and/or abrasive substances, having a housing, a shut-off element, sealing rings and soft packings. The sealing rings are inserted into a recess in the housing and soft packings are arranged between the housing and the sealing rings. The shut-off element is guided between the sealing rings. According to the invention, it has a metallic main body which is coated with a hard metal surface layer. <IMAGE>