With the development of the pesticide and pharmaceutical industry, the requirements for cleaning, sterilizing, and sealing reaction equipment have become increasingly stringent in the manufacture of pesticides and pharmaceuticals. Therefore, the valves used in working conditions often require zero leakage to prevent the drugs from being contaminated during the manufacturing process. The entire operating space is free of irritating odors and smoke, which imposes strict requirements on the valve manufacturing industry. At the same time, under the development trend of the pesticide industry, various types of valves will be more widely used in the pesticide and pharmaceutical industries.