In recent years, with the rapid development of domestic economy and the improvement of residents' living standards, the annual discharge of industrial sewage and domestic sewage is also increasing. The problem of water pollution in China is very serious. The data shows that the proportion of five kinds of water quality sections in seven major water systems is 20%. According to the continuous monitoring data of 120 cities by relevant departments, about 66% of the urban groundwater is seriously polluted, 32% of the groundwater is slightly polluted, and only 3% of the urban groundwater is basically clean. With the continuous increase of the national sewage discharge, the corresponding fixed investment of sewage treatment facilities is also increasing. Under the huge demand environment, the market demand for drainage valves is rising, which will also show a better development prospect.

Drainage valve is an indispensable aquatic industry product, which is mainly used in urban, construction, enterprise water supply and drainage engineering, industrial and domestic sewage treatment, water conservancy engineering and other fields. Among them, the most widely used valves are all kinds of medium and low pressure valves, including all kinds of butterfly valves and gate valves. Other valves include ball valves, check valves, exhaust valves, plug valves, diaphragm valves, pressure reducing valves, flow regulating valves, mud discharge valves And so on. At present, more consideration is given to the secondary treated water of urban sewage treatment plant, which can be used in two ways: direct reuse and indirect reuse. Direct reuse is mainly used for farmland irrigation and grassland near the water plant. The way and way of reuse are relatively simple due to regional restrictions, and it is not convenient to allocate and operate. Although this water has been artificially strengthened and disinfected, it will have some problems when it is not used and controlled because it has not been naturally purified for a certain time. Indirect utilization is to take water from the upper reaches of the water body for urban use in consideration of the overall water area. The generated sewage is purified by the urban sewage treatment plant and then discharged to the lower reaches of the water body, and then returned to the water body. After natural purification of a certain river section, it can be used by the downstream cities or regions. Indirect utilization is an organic combination of social cycle and natural cycle of water in nature. Within the limit of self purification capacity of water body, it will not cause harm to the utilization of water body, which needs to be managed from a macro perspective. It is an important way of sustainable utilization of water resources.

Whether it's the enterprise's sewage treatment or urbanization, the sewage treatment is closely related to the valve industry, which is also a new growth point of the valve industry, especially the gate valve and butterfly valve. At present, in the valve market, China has been able to provide heating valve, environmental protection valve, construction valve, etc., with many varieties. However, in the field of high-pressure valve, it still depends on import, which is also the field that China's valve needs to make a breakthrough in the future, in order to really promote the development of China's valve industry. However, the valve industry in China is still dominated by small and medium-sized enterprises. At present, the competition in the industry is mainly the competition of low-end products. Informal means of competition are disrupting the development of the market and causing great harm to the valve manufacturing industry. With the acceleration of the pace of restructuring of the valve industry, the future industry will be the competition between the quality and safety of valve products and product brands. The products will develop in the direction of high technology, high parameters, strong corrosion resistance and high service life, and constantly improve the level and grade of valve products. Under the huge demand environment, China's valve manufacturing industry will show a better development prospect.