Summary

Ten application fields of valves


1. Valves for petroleum installations


(1) Oil refining unit. Most of the valves required by oil refining units are pipeline valves, mainly including gate valves, globe valves, check valves, safety valves, ball valves, butterfly valves, and steam traps. Among them, the demand for gate valves accounts for about 80% of the total number of valves (valves account for 3% to 5% of the total investment of the unit);


(2) Chemical fiber device. Chemical fiber products mainly include polyester, acrylic and vinylon. Ball valves and jacketed valves (jacketed ball valves, jacketed gate valves, jacketed stop valves) of the valves they need;


(3) Acrylonitrile unit. The device generally requires valves produced in accordance with standards, mainly including gate valves, globe valves, check valves, ball valves, traps, needle globe valves, plug valves, among which gate valves account for about 75% of the total number of valves;


(4) Ammonia plant. Because synthetic ammonia and purification methods are different, their process flows are different, and the technical functions of the required valves are also different. At present, domestic synthetic ammonia plants mainly need gate valves, globe valves, check valves, steam traps, butterfly valves, ball valves, diaphragm valves, regulating valves, needle valves, safety valves, high and low temperature valves;


2. Valves are used in hydropower stations.


The construction of power stations in China is developing in the direction of large-scale, so large-diameter and high-pressure safety valves, pressure reducing valves, stop valves, gate valves, butterfly valves, emergency block valves and flow control valves, spherical seal instrument stop valves are needed,


3. Valves for metallurgical applications.


In the metallurgical industry, alumina behavior mainly needs wear-resistant slurry valve (in flow stop valve) and regulating drain valve. Steel industry mainly needs metal sealed ball valve, butterfly valve and oxidation ball valve, stop flash and four-way directional valve;


4. Valves for marine applications


With the development of offshore oil field exploitation, the amount of valves required for offshore flat development is also gradually increasing. Offshore platforms need shut-off ball valves, check valves and multi-way valves;


5. Valves for food and pharmaceutical applications


Stainless steel ball valves, non-toxic plastic ball valves and butterfly valves are mainly used in this industry. Among the above 10 types of valve products, the demand for general-purpose valves is in the majority, such as instrument valves, needle valves, needle globe valves, gate valves, globe valves, check valves, ball valves and butterfly valves;


6. Valves used in rural and urban buildings


The urban construction department generally adopts low-pressure valves, and is currently developing in the direction of environmental protection and energy conservation. Environmental friendly rubber plate valves, balance valves, center line butterfly valves and metal seal butterfly valves are gradually replacing low-pressure iron gate valves. The valves required by domestic urban buildings are mostly balance valves, soft seal gate valves, butterfly valves, etc;


7. Valves for rural and urban heating


In the urban heat generation system, a large number of metal sealed butterfly valves, horizontal balance valves and directly buried ball valves are needed, because these valves solve the problem of vertical and horizontal hydraulic imbalance of pipelines, so as to achieve the purpose of energy saving and heat generation balance.


8. Valves for environmental protection applications


In the domestic environmental protection system, the water supply system mainly needs the center line butterfly valve, soft seal gate valve, ball valve and exhaust valve (used to remove the air in the pipeline). The sewage treatment system mainly needs soft sealing gate valve and butterfly valve;


9. Gas valve


Urban gas accounts for 22% of the whole natural market, with large consumption of valves and many types. It mainly needs ball valve, plug valve, pressure reducing valve and safety valve;


10. Pipeline application valve


Long distance pipelines are mainly crude oil, finished products and natural pipelines. The valves with most demand for this kind of pipeline are forged steel three body full bore ball valve, sulfur resistant flat gate valve, safety valve and check valve.