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The history of valve
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Since the 80 s, with China's reform and opening-up policy carry out and implement, began to organize backbone enterprise of similar products imported valve design, technology and other advanced technology and processing equipment, makes the valve manufacturing technology in China and to improve the quality of the product quickly. For example, to produce various types of sleeve valve, eccentric rotary valve, began to develop fine small regulator. With large power plants and other industrial projects, has developed a variety of electro-hydraulic actuator, such as long stroke actuator actuator, to adapt to the big thrust and torque, long stroke control requirement.
In the 90 s, China's valve industry also began after introduce and absorb foreign advanced technology rapid development, to fill the gaps in some special industrial control, level control valve industry in China is greatly increased, shorten the gap with foreign.
At present, the domestic valve production backbone enterprises can according to ISO international standards, the German DIN standards, AWWA standard American international standard design and manufacture all kinds of valves, such as part of the manufacturer's products reached the international advanced level
Although the overall level of the valve industry greatly improve, but also the quality is not stable, such as run, run, drip, leak phenomenon often appears in the domestic valves. Valves, in addition, the supporting capacity is also compared with the developed countries there is still a big gap between.
If the valve is a brief overview of this industrial products we could say that.
Valve is a pipeline transport system in the control unit, from the most brief stop valve to extremely complex automatic control system used in all kinds of valve, ball valve, butterfly valve, gate valve, globe valve, check valve, regulating valve, safety valve, plug valve, diaphragm valve, etc. The valve can be used to control air, water, steam, all kinds of corrosive medium, mud, oil, liquid metal and radioactive medium, etc. All types of fluid flow. In the valve market distribution, mainly on the basis of the construction of the project, the valve is the biggest user department of department of petrochemical industry, electric power, metallurgy, chemical industry and urban construction department, such as urban tap water pipes, building construction, urban heating; Oil pipeline, the pharmaceutical industry, food industry, etc. Valves used in water treatment industry, mainly in low-pressure valve products, such as butterfly valve, gate valve, check valve.