Oil refining device Most of the valves used in refining units are pipeline valves, mainly gate valves, globe valves, check valves, safety valves, ball valves, butterfly valves, and steam traps. Among them, gate valves account for about 80% of the total number of valves. 3% to 5% of investment). Chemical fiber device Chemical fiber products mainly include polyester, acrylic and vinylon. Ball valve and jacketed valve (jacketed ball valve, jacketed gate valve, jacketed shut-off valve) for the valve to be used. Acrylonitrile device The device generally needs to use the api standard production valve, mainly for gate valve, globe valve, check valve, ball valve, steam trap, needle valve, plug valve, wherein the gate valve accounts for about 75% of the total valve. Synthetic ammonia plant Due to the different synthetic ammonia and purification methods, the process flow is different, and the technical performance of the required valves is also different. At present, domestic ammonia plants mainly need gate valves, globe valves, check valves, traps, butterfly valves, ball valves, diaphragm valves, regulating valves, needle valves, safety valves, and high temperature cryogenic valves. Among them, the stop valve accounted for 53.4% ​​of the total valve data of the device, the gate valve accounted for 25.1%, the trap accounted for 7.7%, the safety valve accounted for 2.4%, the regulating valve and the cryogenic valve and other 11.4%. Ethylene plant The ethylene plant is a leading faucet for petrochemicals and requires a wide variety of valves. Gate valves, globe valves, check valves, and lift-rod ball valves account for the majority, with gate valves needing to take the lead. “In addition, large-scale ethylene and high-pressure polyethylene units also require ultra-high temperature, lower temperature and ultra-high pressure valve series. Air separation unit "Air separation" means air separation. The device mainly requires a shut-off valve, a safety valve, a check valve, a regulating valve, a ball valve, a butterfly valve, and a cryogenic valve. Polypropylene unit Polypropylene is a polymer compound which is polymerized by using propylene as a raw material. The device mainly requires a gate valve, a shut-off valve, a check valve, a needle valve, a ball valve, and a steam trap. Coal chemical plant Constant Force Spring,Constant Force Spring Model,Constant Force Springs,Constant Force Spring Processing Dongguan Jiufukai Hardware Products Co., Ltd , https://www.jfkspring.com
