Various valve use ratio

City gas valve: City gas accounts for 22% of the entire natural gas market. The number of valves is large and there are many types.
The main requirements for the use of ball valves, plug valves, pressure reducing valves and safety valves.
2. Urban heating valves: In urban heating systems, a large number of metal-sealed butterfly valves, horizontal balance valves and directly buried ball valves are required. Thanks to these valves, the longitudinal and transverse hydraulic imbalance of the pipeline can be solved, thereby achieving energy saving and thermal balance.
Purpose.
3. Urban construction valves: Urban construction systems usually use low-pressure valves and are currently being developed in an environmentally friendly and energy-saving manner.
Environmentally friendly rubber plate valves, balance valves, middle line butterfly valves and metal sealing butterfly valves are gradually replacing low-pressure iron gate valves.
Domestic urban construction requires valves, such as balancing valves, soft sealing gate valves and butterfly valves.
4. Environmental protection valve: In the domestic environmental protection system, the water supply system mainly needs the middle line butterfly valve, soft seal gate valve, ball valve and exhaust valve (used to remove the air in the pipeline).
Sewage treatment systems mainly require soft seal 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 pipes are forged steel three-piece full-bore ball valves, sulfur-resistant plate gate valves, safety valves and check valves.
6. valves of petrochemical plant:
a. Refining equipment, most of the valves used in refining equipment are pipeline valves, mainly gate valves, globe 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 plant investment).
B. Chemical fiber equipment, chemical fiber products mainly include polyester, acrylic and vinylon.
Ball valves and jacketed valves (jacketed ball valves, jacketed gate valves, jacketed globe valves) for valves.
c, acrylonitrile unit.
This equipment generally needs to use api standard production valves, mainly used for gate valves, globe valves, check valves, ball valves, traps, needle valves, plug valves, which account for about 75% of the total number of gate valves.
d, ammonia plant.
Due to the different synthetic ammonia and purification methods, the process flow is different, and the technical performance of the required valve is also different.
At present, domestic ammonia plants mainly need emergency shut-off valves, gate valves, globe valves, check valves, traps, butterfly valves, ball valves, diaphragm valves, regulating valves, needle valves, safety valves and high temperature and low temperature valves.
Among them, the cut-off valve accounted for 53.4 per cent of the total valve data, gate valves accounted for 25.1 per cent, traps accounted for 7.7 per cent, safety valves accounted for 2.4 per cent, control valves and low-temperature valves and other 11.4 per cent.
E, ethylene plant, ethylene plant is the main device of petrochemical industry, it needs a variety of valves.
Gate valves, globe valves, check valves and poppet ball valves account for the majority, and gate valves need to be headed.
In addition, large ethylene and high-pressure polyethylene plants require ultra-high temperature, low temperature and ultra-high pressure valve series.
f, air separation unit.
g. Polypropylene device, polypropylene is easy to use propylene as raw material, polymeric polymer compound, the device mainly needs gate valve, stop valve, check valve,
Needle valve, ball valve, steam trap.
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, globe valves, gate valves, butterfly valves, emergency shut-off valves, flow control valves and spherical sealing instruments are required.
Close the valve.
8. Metallurgical valves: The behavior of alumina in the metallurgical industry mainly requires the use of wear-resistant slurry valves (in mobile stop valves) and the adjustment of traps.
Metal sealed ball valves, butterfly valves and oxidation ball valves, globe valves and four-way reversing valves are mainly used in the steel-making industry.
9. Offshore platform valves: With the development of offshore oil fields, the number of valves required for offshore leveling is also increasing.
Offshore platforms require offshore valves, check valves and multi-way valves.
10. Valves for food and medicine: The industry mainly needs stainless steel ball valves, non-toxic all-plastic ball valves and butterfly valves.
Among the above 10 large-scale valve products, the demand for general-purpose valves is much higher, such as instrument valves, needle valves, gate valves, globe valves, check valves, ball valves and butterfly valves.