Oil refining device is mainly used for high temperature and high pressure oil transportation, reactor feed control, catalytic cracking system. The main valves are gate valves (80%), globe valves (50%), check valves, ball valves, butterfly valves, etc., which need to have fireproof, explosion-proof and sulfide stress corrosion-resistant design, and all materials are mostly stainless steel or alloy steel.
Chemical fiber device is mainly used for polymer melt transport, high temperature thermal oil system, corrosive chemicals control. The main valves involved are ball valves and jacketed valves. Because of its focus on corrosion resistance, austenitic stainless steel (such as A182-F316L) is a common material. There are also carbon steel, WCB and other materials.
Acrylonitrile plant is mainly used for the control of highly toxic media (such as hydrocyanic acid), high temperature reaction system. The main valves involved are gate valves, globe valves, check valves, ball valves. The material is required to resist hydrogen embrittlement and stress corrosion.
Ammonia plant is mainly used in high-pressure synthesis tower, ammonia compression system, high-temperature conversion furnace. Mainly involves valves for gate valves, globe valves, check valves, traps, butterfly valves, ball valves and so on. The main material valves need to resist hydrogen corrosion, often made of stainless steel.
Ethylene device is mainly used in ultra-low temperature ethylene storage, high-pressure polyethylene reaction (high temperature, high pressure, ultra-low temperature and other occasions). Mainly involves valves for gate valves, globe valves, check valves, ball valves and so on. Material requirements for corrosion resistance, resistance to deep cold.
Air separation device is mainly used for liquid oxygen, liquid nitrogen transportation, low temperature separation system. The main valves involved are globe valves, safety valves, check valves, regulating valves, butterfly valves, ball valves and so on. The material requirements of corrosion resistance, resistance to deep cold. Need to strictly prohibit oil treatment, to avoid contact with liquid oxygen triggered by combustion and explosion.
Polypropylene plant is mainly used for propylene polymerization reaction system, catalyst injection, high temperature and high pressure circulating gas transportation, finished product particle separation and packaging. The main valves are ball valves, made of polypropylene.
API (American Petroleum Institute) valves are designed and manufactured according to the API standard valves, widely used in oil, natural gas, chemical industry, etc. API valves in different installations need to be combined with the specific conditions of choice.
Product Picture
Application System of API Valves
Key Points for Selecting Check Valves
API valve vs Ordinary valve.
Flue Gas Desulfurization Valve