The material of Sanitary Check Valve is usually imported SUS304, 316L and other stainless steel materials, which have excellent corrosion resistance and high temperature resistance, and can meet the special requirements of the media in the fields of food, biopharmaceuticals, etc. At the same time, the key parts of the valve, such as the sealing ring, are also made of food-grade materials, such as EPDM, NBR, PTFE, etc., to ensure the purity and safety of the media.