Several measures to improve Sanitary Butterfly Valve are as follows:

1. Outsourced production of rubber rings at designated locations to strengthen quality control; EPDM and NBR are used for valves commonly used in the water supply industry, but rubber is not used much, and mixing with rubber is strictly prohibited; a factory changes the entire pressure plate of the sealing rubber ring on the butterfly plate into a short dovetail assembly connection to adjust the extrusion degree of the pressure plate at each part to balance the service life of the sanitary butterfly valve, but this adjustment technique is also difficult to master;

2. Some factories have launched DB sanitary butterfly valves and flange sanitary butterfly valves, whose sealing rubber rings are embedded in the dovetail groove, with some free space, and can adjust the extrusion of the rubber ring when the sanitary butterfly valve is closed;

3. A "fluoroplastic" sealing ring is launched to replace the rubber sealing ring to improve the wear resistance and aging resistance of the sealing ring;

4. Many manufacturers have launched metal-sealed sanitary butterfly valves to replace rubber ring-sealed sanitary butterfly valves.