Socket Weld Check Valve Industry Application Scenarios

I. Petroleum and Energy Industry
‌Oil and Gas Exploration and Transportation‌: Used in pipeline systems containing hydrogen sulfide and highly corrosive media to prevent safety hazards caused by backflow of media, and suitable for Class 150~2500 high-pressure environments‌26.
‌Oil Refining and Storage and Transportation‌: Forged steel socket welding check valves (such as H61H-25P) are used in refinery hydrocracking units and storage tank outlet pipelines. They are resistant to high temperatures (≤300℃) and have stable sealing performance‌68.
II. Chemical and Pharmaceutical Industry
‌Corrosive Media Control‌: When handling highly corrosive fluids such as acids, alkalis, and salts, socket welding check valves made of 316L or duplex steel are used, which can withstand working conditions with chloride ion concentrations ≥5000ppm‌28.
‌Pharmaceutical clean system‌: Sanitary Socket Weld Check Valve (such as SUS316L material) is used for sterile pipelines, with a surface roughness of Ra≤0.8μm, meeting FDA/GMP certification requirements‌36.
3. Power and metallurgical industry ‌Thermal power and nuclear power system‌: In the steam generator water supply pipeline and the secondary circuit of the nuclear power plant, the forged steel socket welding check valve can withstand 25MPa high pressure to prevent water hammer impact‌26.
‌Metallurgical high temperature scene‌: Suitable for molten metal conveying pipelines, with a temperature resistance of 450℃, and the valve body adopts cladding carbide sealing surface to extend the service life‌28.
4. Environmental protection and water treatment industry ‌High chlorine wastewater treatment‌: UPVC Socket Weld Check Valve (such as Taicang Huanqi series) is resistant to acid and alkali corrosion, suitable for DN50~300mm pipelines, and the opening and closing pressure difference is ≤0.05MPa‌4.
‌Seawater desalination system‌: Duplex steel 2507 socket welding check valve can resist seawater chloride ion corrosion, and its service life is more than twice that of 316L‌28.
V. Food and municipal engineering
Food and beverage production‌: Sanitary socket welding check valves are used in dairy and beverage filling lines, meet 3A sanitary standards, and can be quickly disassembled and cleaned‌36.
Urban heating network‌: Wafer-type socket welding check valves (such as H76X series) are suitable for DN200~800mm pipes to prevent hot water backflow from causing pressure imbalance in the network‌48.