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There are about 2300 valve manufacturers in our country, and there are more than 3500 kinds of valve products and more than 40000 specifications that can be provided.
(1) valves for urban construction: the urban construction system generally adopts low-pressure valves, which are currently developing in the direction of environment-friendly and energy-saving. Environmental friendly rubber plate valve, balance valve, midline butterfly valve and metal sealed butterfly valve are gradually replacing low-pressure iron gate valve. Most of the urban buildings in the sea need balance valve, soft seal gate valve, butterfly valve and so on.
(2) valves used for urban heating: in the urban heating system, a large number of metal sealed butterfly valves, horizontal balance valves and directly buried ball valves are needed. Because of this kind of valves, the problem of vertical and horizontal hydraulic imbalance of pipelines is solved, achieve the goal of energy saving and heat supply balance.
(3) valves for environmental protection: in the domestic environmental protection system, the water supply system mainly needs middle line butterfly valve, soft seal gate valve, ball valve and exhaust valve (used to drain the air in the pipeline ). The sewage treatment system mainly needs soft sealed gate valve and butterfly valve.
(4) valves for urban gas: urban gas accounts for 22% of the whole natural market, with large consumption of valves and many types. Ball Valve, plug valve, pressure reducing valve and safety valve are mainly needed.
(5) valves for long-distance pipelines: long-distance pipelines are mainly crude oil, finished products and natural pipelines. The valves which need a large amount of pipeline are forged steel Three-Body full-diameter ball valve, anti-sulfur plate gate valve, safety valve and check valve. [Ok3w_NextPage]
(6) the valve for petrochemical plant:
A. Refining equipment. Most of the valves needed by refining equipment are pipeline valves, mainly sluice valve, stop valve, check valve, safety valve, ball valve, butterfly valve, drain valve, among which, the demand of gate valve accounts for about 80% of the total number of valves.
B. Chemical fiber device. Chemical fiber products mainly include three categories: Polyester, acrylic and vinylon. The ball valve and jacket valve of the needed valve.
C. Acrylic sunny device. This device generally needs api-scale valves, which are mainly gate valves, stop valves, check valves, ball valves, drain valves, needle valves and Plug Valves. Among them, gate valves account for about 75% of the total number of valves.
D. Ammonia synthesis unit. Because ammonia synthesis and purification methods are different, and their technological processes are different, the technical functions of the required valves are also different. Currently, domestic ammonia synthesis unit mainly needs gate valve, stop valve, check valve, drain valve, butterfly valve, ball valve, diaphragm valve, regulating valve, needle valve, safety valve and high temperature and low temperature valve.
E. Ethylene plant. Ethylene plant is the leading device of petrochemical engineering, and it needs a wide variety of valves.
F. Air separation unit. "Air Separation" means air separation. The device mainly needs stop valve, safety valve, check valve, regulating valve, ball valve, butterfly valve and low temperature valve.
G. Polypropylene device, polypropylene is easy to be a polymer compound aggregated from propylene. The device mainly needs gate valve, stop valve, check valve, needle valve, ball valve and drain valve.
(7) valves for power stations: the construction of power stations in our country is developing towards large scale, therefore, it is necessary to use large-caliber and high-pressure safety valve, pressure reducing valve, stop valve, gate valve, butterfly valve, emergency interception valve, flow control valve and spherical sealing instrument stop valve.
(8) valve for metallurgy: alumina in metallurgy industry mainly needs wear-resisting slurry valve (in flow stop valve) and regulating drain valve. Steel-making industry mainly needs metal sealed Ball Valves, Butterfly Valves, oxidation ball valves, cut-off flashover and four-way reversing valves.
(9) Marine flat applicable valve: With the development of offshore oil field exploitation, the amount of valves needed for marine flat development is also gradually increasing. The offshore platform needs to use shutoff ball valve, check valve and multiway valve.
