Petroleum chemical industry refers to the production of petroleum products such as gasoline, kerosene, diesel oil, lubricating oil and liquefied petroleum gas, etc. with crude oil and natural gas as raw materials; and the production of chemical products such as ethylene, aromatic hydrocarbon for further production of synthetic resin, synthetic fiber, synthetic rubber and all kinds of chemical raw materials, etc. with light oil as raw material. It is a modern industry.
Petrochemical valves are the most numerous equipment in petrochemical production facilities. In petrochemical production, all kinds of gaseous and liquid media will pass through various valves, and be cut off or transported to various containers and process equipment according to the needs of the production process. The valves commonly used in petrochemical production are divided into general valves and special valves.