Ratio Of Various Valve Usage Occasions

1. City gas valves: City gas accounts for 22% of the entire natural gas market. The number of valves is large and there are many types.
Mainly require the use of ball valves, plug valves, pressure reducing valves and safety valves.
2. City heating valves: In the city heating system, a large number of metal-sealed butterfly valves, horizontal balancing valves and direct-buried ball valves are required. Thanks to these valves, the longitudinal and lateral hydraulic imbalance of the pipeline can be solved, thereby achieving energy saving and thermal balance.
Purpose.
3. Valves for urban construction: Urban construction systems generally use low-pressure valves, which are currently being developed in an environmentally friendly and energy-saving manner.
Environmentally friendly rubber plate valves, balancing valves, center-line butterfly valves and metal-sealed butterfly valves are gradually replacing low-pressure iron gate valves.
Domestic urban construction requires valves such as balancing valves, soft-sealed gate valves and butterfly valves.
4. Environmental protection valves: In domestic environmental protection systems, water supply systems mainly require center-line butterfly valves, soft-sealed gate valves, ball valves and exhaust valves (used to remove air from pipelines).
Sewage treatment systems mainly require soft-sealed gate valves and butterfly valves.
5. Long-distance pipeline valves: Long-distance pipelines are mainly crude oil, finished products and natural pipelines.
Valves that require a large number of such pipelines are forged steel three-piece full-bore ball valves, sulfur-resistant plate gate valves, safety valves and check valves.
6. Valves in petrochemical plants:
a. Refining equipment, most of the valves used in refining equipment are pipeline valves, mainly gate valves, stop valves, check valves, safety valves, ball valves, butterfly valves, steam traps, of which gate valves account for about 80% of the total. Number of valves.
(Valves account for 3% to 5% of the total investment of the factory).
b. Chemical fiber equipment, chemical fiber products mainly include polyester, acrylic acid and vinylon.
Ball valves and jacketed valves (jacketed ball valves, jacketed gate valves, jacketed stop valves) are used for valves.
c, acrylonitrile unit.
The equipment generally needs to use API standard production valves, mainly for gate valves, stop valves, check valves, ball valves, steam traps, needle valves, plug valves, of which gate valves account for about 75% of the total valves.
d, ammonia plant.
Due to different synthetic ammonia and purification methods, different process flows, the technical performance of the required valves is also different.
At present, domestic ammonia plants mainly need emergency shut-off valves, gate valves, stop valves, check valves, steam traps, butterfly valves, ball valves, diaphragm valves, regulating valves, needle valves, safety valves and high-temperature and low-temperature valves.
Among them, stop valves account for 53.4% ​​of the total valve data of the device, gate valves account for 25.1%, steam traps account for 7.7%, safety valves account for 2.4%, regulating valves and low-temperature valves and others account for 11.4%
.
e, ethylene plant, ethylene plant is the main device of the petrochemical industry, it requires a variety of valves.
Gate valves, stop valves, check valves and lifting rod ball valves account for the majority, and gate valves need to take the lead.
"In addition, large-scale ethylene and high-pressure polyethylene units require ultra-high temperature, low temperature and ultra-high pressure valve series.
f, air separation unit.
g, polypropylene unit, polypropylene is easy to use propylene as raw material, polymerize high molecular compound, the unit mainly needs gate valves, stop valves, check valves, needle valves, ball valves, steam traps.
7. Power station valves: The construction of power stations in China is moving towards large-scale development. Therefore, large-diameter and high-pressure safety valves, pressure reducing valves, stop valves, gate valves, butterfly valves, emergency shut-off valves, flow control valves and spherical sealing instruments are required.
Shut-off valves.
8. Metallurgical valves: The behavior of alumina in the metallurgical industry mainly requires the use of wear-resistant slurry valves (in flow-type stop valves) and the adjustment of steam traps.
Metal-sealed ball valves, butterfly valves and oxidation ball valves, stop valves and four-way reversing valves are mainly used in the steelmaking industry.
9. Offshore platform valves: With the development of offshore oil field development, the number of valves required for offshore flat development is also increasing.
Offshore platforms require offshore valves, check valves and multi-way valves.
10. Valves for food and medicine: This industry mainly requires stainless steel ball valves, non-toxic all-plastic ball valves and butterfly valves.
Among the above 10 large valve products, the demand for general valves is much higher, such as instrument valves, needle valves, gate valves, stop valves, check valves, ball valves and butterfly valves, etc.