After installation, inspection shall be carried out on time. Key new inspection items include:
(1) Damaged condition of protruding face.
(2) The trapezoidal thread of the valve stem and valve stem nut is damaged.
(3) Whether the filler is outdated and invalid, and if damaged, it should be replaced immediately.
(4) After the electric valve is repaired on the assembly line, it is necessary to carry out the tightness characteristic test. 　　

At present, China has issued a report on the development prospects of valve enterprises. In view of the current situation of China's valve enterprises proposed in the report, the country has proposed preferential policies for the revitalization of China's valve equipment manufacturing, in which the national finance especially supports the research and development of basic manufacturing industry. China is now undergoing a critical period of transformation from the agricultural era to the industrial era. The development of industry cannot be separated from the development of infrastructure, not to mention the development of the valve industry, especially the demand for electric on-off ball valves in the market is relatively strong. Relevant experts pointed out that the development trend of the valve market in China is the main theme of the development of basic equipment in the next few years, and the valves in the future will mainly develop in the following aspects: