Sangyie Hygienic double seat mixproof valves are designed to handle flow of two different media synchronously without risk of cross-contamination. Hygienic double seat mixproof valves offer a safe separation of media and prevents accidental mixing in case of valve seat failure. The most usual applications are the ones that require safe separation of the product and CIP (Cleaning-in-Place) and SIP (Sterilization-in-Place) solutions in a single point or at the end of a manifold, widely used in food-processing, beverages, brewing, dairy, cosmetic and pharmaceutical industries.