Various types of valves commonly used occasions

Various types of valves commonly used occasions

　　1. Valves for city gas: city gas accounts for 22% of the entire natural gas market, with a large number and variety of valves. Need the main ball valves, plug valves, pressure reducing valves and safety valves.

　　2. Valves for city heating: in the city thermal power generation system, a large number of metal-sealed butterfly valves, horizontal balance valves and direct buried ball valves are needed, because these valves can solve the problem of longitudinal and horizontal hydraulic imbalance of pipelines, and achieve the purpose of energy-saving and thermal balance of power generation.

　　3. Valves for urban construction: low-pressure valves are commonly used in urban construction systems, to the direction of environmental protection and energy saving. Environmentally friendly rubber plate valves, balance valves, centerline butterfly valves, metal-sealed butterfly valves are gradually replacing low-pressure iron gate valves. Most of the valves required for domestic construction are balance valves, soft seal gate valves, butterfly valves and so on.

　　4. Environmental protection valves: in the domestic environmental protection system, the water supply system mainly needs centerline butterfly valve, soft seal gate valve, ball valves and exhaust valves (used to discharge the air in the pipeline). Sewage treatment system mainly need soft seal gate valve and butterfly valve.

　　5. Long-distance pipeline valves: long-distance pipeline is mainly crude oil, finished products and natural pipelines. The most used valves in such pipelines are forged steel three-body full bore ball valves, sulfur-resistant flat gate valve, safety valves and check valves.

　　6. Petrochemical plant with valves: a. Refinery equipment, refinery equipment required by most of the valves are pipeline valves, mainly gate valves, globe valves, check valves, safety valves, ball valves, butterfly valves, traps, etc., of which the demand for gate valves accounted for about 80% of the total number of valves (valves accounted for the total investment in the device of 3% ~ 5%). b . Chemical fiber equipment, chemical fiber products mainly include polyester, acrylic and vinylon. Ball valves and jacketed valves (jacketed ball valves, jacketed gate valves and jacketed globe valves) for the required valves. c . Propylene cleaning unit. The plant generally requires api standard production of valves, mainly including gate valves, globe valves, check valves, ball valves, traps, needle valves and plug valves, of which gate valves account for about 75% of the total number of valves. d . Ammonia synthesis plant. Due to the different ammonia raw materials and purification methods, the process is different, and the technical performance of the required valves is different. At present, the domestic synthetic ammonia plant mainly needs gate valves, globe valves, check valves, traps, butterfly valves, ball valves, diaphragm valves, regulating valves, needle valves, safety valves and high and low temperature valves. Among them, the globe valve accounted for 53.4% of the total data of the plant with the valve, gate valve accounted for 25.1%, traps accounted for 7.7%, safety valves accounted for 2.4%, regulating valves, cryogenic valves, etc. accounted for 11.4%. Ethylene plant is the leading equipment in the petrochemical industry, requiring a wide range of valves. Gate valves, globe valves, check valves and lifting rod ball valves account for most of them, of which the gate valve should be the first. “Tenth Five-Year” period, the country still need to build six 660,000 tons per year ethylene plant, valve demand is quite large. In addition, large ethylene and high-pressure polyethylene devices also need ultra-high temperature, ultra-low temperature and ultra-high pressure valve series products. f . Air separation device. “Air separation” means air separation. This unit requires mainly globe valves, safety valves, check valves, regulating valves, ball valves, butterfly valves and cryogenic valves. g . Polypropylene plant, Polypropylene is easily a polymer compound made by polymerizing propylene. This plant mainly needs gate valves, globe valves, check valves, needle valves, ball valves and traps. 7. power station valves: China's power plant construction is being developed to large-scale, so the need to use large diameter, high-pressure safety valves, pressure reducing valves, globe valves, gate valves, butterfly valves, emergency shut-off valves, flow control valves, spherical sealing instrumentation shut-off valves (according to the national “Tenth Five-Year” plan, in addition to Inner Mongolia, the country is the first time in the world to use the “Tenth Five-Year” plan. According to the national “Tenth Five-Year Plan”, in addition to Inner Mongolia, Guizhou provinces can also build more than 200,000 kilowatts of units, other provinces and cities can only build more than 300,000 kilowatts of units).

　　8. Valves for metallurgy: wear-resistant slurry valves (inflow cut-off valve) and regulating traps are the main needs of the metallurgical industry in the behavior of alumina. Steelmaking industry mainly needs metal-sealed ball valves, butterfly valves and oxidation ball valves, globe valves and four-way directional valves.

　　9. Marine valves: with the development of offshore oil field development, the number of valves required for marine oil development is gradually increasing. Offshore platforms require shut-off ball valves, check valves and multi-way valves.

　　10. Food, pharmaceutical valves: the industry mainly needs stainless steel ball valves, non-toxic all-plastic ball valves, butterfly valves. Among the above 10 valve products, the demand for general-purpose valves is the highest, such as instrument valves, needle valves, gate valves, globe valves, check valves, ball valves, butterfly valves and so on.