Design and structure: The sanitary butterfly valve adopts a dead angle-free design, with a smooth and polished inner wall, which effectively avoids the accumulation of impurities and the growth of bacteria, and supports on-site cleaning and sterilization operations. The design of ordinary butterfly valves is mainly based on durability and cost-effectiveness, and there may be dead angles inside, which makes cleaning more complicated. Material selection: Sanitary Butterfly Valve mostly uses 316L stainless steel, which has excellent corrosion resistance and non-toxicity, and is suitable for contact with media with high cleanliness requirements such as food and medicine. Ordinary butterfly valves are usually made of cast iron, carbon steel or ordinary stainless steel.