Our butterfly valves can be in touch with food products, fresh milk, beer/wine, medicine, cosmetic during your processing, which products get into human’s mouth directly, and some others getting touch with human’s skin. In the course of the food process, beer brewing or milk sterilization. Through 1″ – 4″ is available. We also have 1/4″ and 1/2″ for you to choose, as some particular pipe system need smaller sizes.