Understand the type of valve

From the application point of view of distribution: how many types of valves in our country?

(1) urban construction valves:

Urban Construction Department with the general use of low-pressure valve, is currently environmentally friendly and energy-saving direction. Environment-friendly plastic valve, balance valve and the middle of the butterfly valve, metal butterfly valve is gradually replacing the low pressure iron gate. Domestic urban construction needs more valves for the balance valve, soft seal gate valve, butterfly valve.

(2) urban heating with the valve:

Urban heat generation system, the need to use a large number of metal seal butterfly valve, horizontal balance valve and direct buried ball valve, because of such valves to solve the pipeline vertical and horizontal hydraulic imbalance problem, to energy saving, generation heat balance purposes.

(3) Environmental protection valve:

In the domestic environmental protection system, the water supply system mainly needs the midline butterfly valve, soft seal gate valve, ball valve and exhaust valve (used to eliminate the air in the pipeline). Sewage treatment system is mainly required to use soft seal gate valve, butterfly valve.

(4) city gas valve:

City gas accounts for 22% of the entire natural market, the amount of valves is large, and its types are numerous. Mainly need ball valve, plug valve, pressure reducing valve, safety valve.

(5) long-distance pipeline valve:

Long-distance pipelines are mainly crude oil, finished pipelines and natural pipelines. The amount of such pipelines need to use the valve is forged steel three-way full-diameter ball valve, anti-sulfur plate gate valve, safety valve, check valve.

(6) petrochemical plant valves:

a, oil refining equipment, oil refining equipment are mostly used in the pipeline valves, mainly for the gate valve, globe valve, check valve, safety valve, ball valve, butterfly valve, steam trap, of which the valve needs accounted for about 80% of the total valve, (Valve accounts for a total investment of 3% to 5%).

b, chemical fiber installations, chemical fiber products mainly polyester, acrylic, vinylon three categories. Its need to use the valve ball valve, jacket valve (jacket ball valve, jacket valve, jacket cut-off valve).

c, acrylic sunny device. The device is generally required to produce api scale valve, mainly gate valve, globe valve, check valve, ball valve, steam trap, needle valve, plug valve, valve which accounts for about 75% of the total valve.

d, ammonia plant. Because the original ammonia and purification methods are different, the process of different, the valve required technical performance is also different. At present, the domestic ammonia plant mainly needs gate valve, globe valve, check valve, trap, butterfly valve, ball valve, diaphragm valve, regulating valve, needle valve, safety valve, high temperature cryogenic valve.

Among them, the cut-off valve accounts for 53.4% ​​of the total valve data, gate valves accounted for 25.1%, traps 7.7%, safety valves accounted for 2.4%, control valves and cryogenic valves and other accounts for 11.4% .e, ethylene plant, ethylene plant Is the leading petrochemical plant, which requires a wide range of valves.

Gate valve, globe valve, check valve, lift rod ball valve accounted for most of the gate valve to be topped. In the "Tenth Five-year Plan", there are also 6 sets of ethylene plants with an annual output of 660,000 tons nationwide. The demand for such valves is considerable. In addition, large-scale ethylene and high-pressure polyethylene plant also need to use ultra-high temperature, low temperature and ultra-high pressure valve products. f, air separation plant. "Air separation" is the air separation, the device is mainly required cut-off valve, safety valve, check valve, regulating valve, ball valve, butterfly valve, cryogenic valve. g, polypropylene device, polypropylene is easy to propylene as raw material, the polymerization of polymer compounds, the device is mainly required gate valve, check valve, check valve, needle valve, ball valve, steam trap.

(7) Power station valve:

The construction of power plants in China is going towards large-scale development. Therefore, large-caliber and high-pressure safety valves, pressure reducing valves, globe valves, gate valves, butterfly valves, emergency shut-off valves and flow control valves, globe valve stop valves, In the "Tenth Five-Year Plan", in addition to generating more than 200,000 kilowatts of units in Inner Mongolia and Guizhou provinces, other provinces and municipalities will only be able to build more than 300,000 kilowatts units.

(8) Metallurgical valve:

Alumina in the metallurgical industry mainly uses wear-resistant slurry valve (in the flow of stop valve), adjust the trap. Steelmaking industry is mainly required to use metal seal ball valve, butterfly valve and oxide ball valve, dead bolt and four-way valve.

(9) Sea level for the valve:

With the development of offshore oilfield exploitation, the amount of flat-out valves required by the ocean is also gradually increasing. Offshore platform need to turn off the ball valve, check valve, multi-valve.