Check valves, also called non-return valves, are automatic flow control products installed in piping systems. They allow fluid to flow in only one direction and prevent backflow automatically, without manual or electrical operation. Composed of valve body, disc, seat and spring (in some types), they protect equipment and pipelines from damage caused by reverse fluid flow.
Simple and robust structure, with no complex control components, ensuring long service life and low maintenance costs. The compact design saves installation space, and the corrosion-resistant materials (stainless steel, brass, cast iron) adapt to different fluid media and working environments.
Automatic operation relying on fluid pressure difference, no external power required. Fast closing response to prevent backflow effectively, with good sealing performance to avoid fluid leakage. Suitable for various pressure and temperature conditions, compatible with liquids, gases and slurries.
Equipped with a swing disc that opens and closes with fluid flow, suitable for large flow, low to medium pressure systems such as water supply, drainage and oil pipelines.
The disc moves vertically to control flow, offering tight sealing and high pressure resistance, applicable to high-pressure pipelines in petrochemical, power generation industries.
Widely used in municipal water supply and drainage, petrochemical, power generation, chemical processing, water treatment and HVAC industries, suitable for pumps, compressors, tanks and various piping systems to prevent backflow.
