Explosion proof regulating valveIt is a fluid control equipment designed specifically for hazardous environments such as flammability and explosiveness. By integrating explosion-proof technology and precision adjustment functions, it ensures safe and stable operation in industries such as petrochemicals, natural gas, and power energy. Its core advantage lies in combining explosion-proof performance with high-precision control, effectively preventing explosion risks caused by electrical sparks or high temperatures, while meeting the process requirements under complex working conditions.
The valve body and valve cover are made of high temperature resistant and corrosion-resistant materials (such as carbon steel, stainless steel, Hastelloy), and the sealing forms are divided into soft seals (PTFE, graphite, leakage rate ≤ 10 ⁻⁶ x valve rated capacity) and hard seals (Stellite alloy overlay welding), which are suitable for different medium characteristics. The protection level reaches IP67 or IP68, which can resist damp and flooded environments.
Explosion proof regulating valveThe role in various industries:
1、 Oil and gas industry
Upstream (Exploration and Mining):
Pressure and flow regulation of oil and gas wellhead.
Key controls on Christmas Tree.
Various process control circuits of offshore drilling platforms.
Midstream (storage and transportation):
Pressure regulation and stabilization of natural gas long-distance pipelines and urban gas pipelines.
Pressure and liquid level control of LNG receiving stations and storage tanks.
Breather valve control and inlet/outlet flow control for oil/chemical storage tanks.
Downstream (Refining):
Temperature, pressure, and flow control in atmospheric and vacuum distillation units, catalytic cracking units, and hydrogenation units of refineries.
Reactor feed control for petrochemical plants such as ethylene and propylene.
Emergency shutdown and flow control of loading and unloading vehicles/ship docks.
2、 Chemical and Fine Chemicals
Basic chemical engineering: control of various reactions, separations, and distillation processes in production facilities such as synthetic ammonia, urea, methanol, and chlor alkali.
Organic chemical industry: production and treatment of flammable liquids and gases such as benzene, toluene, xylene (BTX), ethylene, and propylene.
Pesticides and dyes: The production process involves a large amount of flammable solvents and intermediates, which require precise control in hazardous areas.
Polymer production: catalyst feeding and reaction temperature control in equipment such as polyethylene, polypropylene, and synthetic rubber.
3、 Pharmaceutical and Bioengineering
API production: Many synthetic steps use flammable organic solvents (such as ethanol, acetone, y ether), and explosion-proof valves are required for feeding, temperature, and pressure control of the reaction vessel.
Solvent recovery system: controls the distillation, condensation, and other operations of the recovered flammable solvents.
Cleanrooms and isolators: In specific processes, it may be necessary to control the combustion gases.
4、 Paint, Coatings, and Spray Industry
Production workshop: A large amount of flammable liquids are involved in the resin synthesis and coating preparation process.
Spray painting workshop/spray painting room: The air is filled with high concentrations of paint mist and solvent vapor, which is a typical explosive environment (Zone 1/2). Valves used to control paint supply pressure, air flow, and drying furnace temperature must be explosion-proof.
5、 Energy and Electricity
Gas power plant: pressure and flow regulation of natural gas intake system, fuel gas control of burner.
Hydrogen energy facilities: Hydrogen has extremely wide explosion limits and low ignition energy. All control points such as hydrogen production, storage, and refueling stations must use high-grade (such as IIC class) explosion-proof regulating valves.
6、 Food and Beverage
Alcoholic beverage production: During the brewing and distillation of Baijiu, beer and wine, ethanol vapor is the main source of explosion risk, and explosion-proof valves are required for relevant process control.
Refining edible oil: Deodorization and other processes may use flammable steam.
7、 Dust explosion hazardous area
Grain processing: In flour mills and feed mills, suspended grain dust is explosive (such as Zone 21/22), and valves used to control feeding and pneumatic conveying must have dust explosion-proof certification (Ex tD).
Pharmaceutical powder processing: Dust clouds generated during the mixing, sieving, and packaging processes of pharmaceutical powders.
Metal processing: Treatment of metal dust such as aluminum powder and magnesium powder.
Wood processing: sawdust and wood dust.
8、 Other industrial sectors
Semiconductor manufacturing: Some processes use flammable specialty gases such as silane and hydrogen.
Wastewater treatment: collection and utilization system for biogas (mainly composed of methane) produced by anaerobic digestion tank.
Coal mine: gas (methane) extraction and utilization system.