The sanitary quick-install butterfly valve body is processed by high-precision CNC, and the smooth surface ensures cleanliness, without medium accumulation area, and will not produce potential pollution. The quick disassembly and assembly of the valve makes the valve opening and maintenance quick and easy, and shortens the process downtime. Sanitary butterfly valves are widely used in such as food, pharmaceuticals, cosmetics, clean steam, dairy products, alcohol, beverages, biochemical industrial process control occasions. The sanitary quick-install butterfly valve has a novel and reasonable design, unique structure, light weight, fast opening and closing, small operating torque, easy operation, labor-saving and dexterous. It can be installed in any position, easy to maintain, and the sealing material is resistant to aging and corrosion, and has a long service life.