How many types of pneumatic valves are there in China?

About 2,300 valves are produced in three productions, and valve products can provide several categories, more than 3,500 varieties, and more than 40,000 specifications.

(1) Valves for urban construction: Urban construction systems generally use the same low-pressure valves, which are currently in the direction of environmental protection and energy saving. Environmentally friendly rubber plate valves, balance valves, butterfly valves, and metal-sealed butterfly valves are gradually replacing low-pressure iron gates. The valves required for urban construction are domestic and main balance valves, soft sealing gate valves, butterfly valves, etc.

(2) Valves for urban heating: Regarding the thermal system, which requires a large number of metal-sealed butterfly valves, ball valves, and the balance level of the valve to bury representatives of the city, because these pipeline valves solve the problem of vertical and horizontal hydraulic imbalances, energy must be saved, on behalf of the city. for thermal balance purposes.

(3) Valves for environmental protection: domestic and environmental systems, the requirements of water supply systems are mainly butterfly valves, soft-sealed gate valves, ball valves, exhaust valves (for removing the air in the pipeline) required by the sewage treatment system, mainly soft Sealed gate valve, butterfly valve.

(4) Valves for city gas: 22% of the city's market, a large number of valves are accounted for by natural gas, and there are many types. Mainly required valves, plug valves, pressure reducing valves, safety valves.

(5) Valves for long-distance pipelines: long-distance pipelines are mainly used for crude oil and natural product lines. Most of these pipelines are forged steel valves, full-bore three-body ball valves, anti-sulfur flat gate valves, safety valves, and check valves.

(6) Valves for petrochemical plants: First, oil refining equipment, most of the oil refining equipment needs are pipe valves, main valves, globe valves, check valves, safety valves, ball valves, butterfly valves, steam traps, and gate valves are about the total 80% of the total investment in the project (3% to 5% of the total investment in valve equipment). b, chemical equipment, chemical products are polyester, acrylic, vinylon three categories. Need to use ball valve, jacketed valve (jacketed ball valve, jacketed valve, jacketed valve). ?, acrylonitrile plant. The equipment generally needs to be used, mainly used for gate valve, globe valve, check valve, ball valve, steam trap, needle valve, plug valve, which accounts for the size of the gate valve API valve, which is about 75% of the total. e, Ammonia plant. Because of the original ammonia and purification methods, the process is also different from the technical performance requirements of the valve. At present, the main synthetic ammonia plants in China need to use valves, globe valves, check valves, steam traps, butterfly valves, ball valves, diaphragm valves, regulating valves, needle valves, safety valves, high temperature and low temperature valves.

Among them, globe valve equipment accounted for 53.4% of the total data valve, gate valve to 25.1%, steam trap 7.7%, 2.4%, safety valve, regulating valve, low temperature valve and other accounting 11.4%. E, ethylene, ethylene plants are leading petrochemical plants, which require a wide range of valves.

Gate valve, globe valve, check valve, lifting rod ball and most of them need to be topped. "Fifth," planning, the country needs to build a 660,000-ton ethylene plant 6 sets, the valve demand considerable production capacity. In addition, large-scale ethylene, high-pressure polyethylene units require the use of ultra-high-temperature, low-temperature and high-pressure valves for more products. No. Air Separation Plant. "Air separation" is air separation, mainly need to use the equipment globe valve, safety valve, check valve, control valve, ball valve, butterfly valve, low temperature valve. Gram, polypropylene device, polypropylene is propylene and easy, polymer polymerization, mainly need to use the device gate valve, globe valve, check valve, needle valve, ball valve, steam trap.

(7) Valves for power plants: the construction of power plants plays a positive direction on a large scale, so it is necessary to use large-diameter and high-pressure safety valves, pressure reducing valves, globe valves, gate valves, butterfly valves, emergency interception and flow control valves, spherical Valve sealing instruments, except for Inner Mongolia, Guizhou and other provinces (according to the national "Tenth Five-Year" plan, more than 200,000 kilowatts can be built in units, and other provinces and cities can only build units above 300,000 kilowatts.)

(8) Metallurgical valve: In the metallurgical industry of alumina slurry main valve wear behavior is necessary (in the flow valve) to regulate the steam trap. The iron and steel industry mainly needs metal-sealed ball valves, butterfly valves and oxide ball valves, stop flashing, and reversing valves.

(9) Sea level of valves: According to the exploration and development of offshore oil, the number of valves that need to be used in the ocean is to gradually increase the number of valves. Globe valve, check valve, multi-way valve required for offshore platform.