The national self regulatory organizations in the valve industry mainly include the China Machinery Industry Federation, the Valve Branch of China General Machinery Industry Association and the Valve Standardization Technical Committee. Among them, the China Machinery Industry Federation organizes research on the economic operation, technological development, enterprise operation and other aspects of the machinery industry, releases industry information, studies the direction of industry development, formulates industry development plans, puts forward industry development policy recommendations, provides industry technical and economic advice, and organizes publicity and implementation. Valve Branch of China General Machinery Industry Association is a branch of China General Machinery Industry Association and a cross regional national valve industry association. It promotes domestic and foreign cooperation by providing technical and consulting services, holding large-scale international exhibitions, conferences, and international exchanges, and acts as a bridge between the government and enterprises. Established in 1992, the Valve Standardization Technical Committee is mainly responsible for formulating the medium and long-term national and industrial standards and annual plans of the valve industry, reviewing the national and industrial standards of the valve industry, responsible for the content of the standards, responsible for the publicity, implementation and interpretation of the centralized standards, and responsible for the standardization technology research of the valve industry.

4. The maximum allowable thrust value of the electric device If the axial force of the valve is borne by the electric device (that is, the valve stem nut is in the electric device), the thrust value is not allowed to exceed the allowable value of the electric device.