The Mark 978 Series is an angle style or inline sanitary control valve for continuous precision control of media, process, purified water, water for injection and clean utilities in the Biopharmaceutical, Pharmaceutical, Food & Beverage and Consumer Health & Beauty industries. The Mark 978 meets ASME BPE as well FDA, and USP guidelines, and is ideally suited for a wide range of flowing media in both the clean utility and process areas of sanitary and aseptic systems. High rangeability, true characterized trim, high capacities, superior temperature and pressure ratings, faciliated by a superior diaphragm, make the MK978 the sanitary control valve for sterile process, buffer, WFI and acid metering and clean gas and steam services.