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Check valve refers to the valve that automatically opens and closes the disc depending on the flow of the medium itself to prevent medium backflow, also known as check valve, one-way valve, counterflow valve, or back pressure valve. Check valve is an automatic valve. Its main function is to prevent medium backflow, reverse pump and drive motor, and release of container medium. Check valves can be divided into swing check valves (rotating according to the center of gravity) and lift check valves (moving along the axis). By choosing different structural forms and materials, it can be widely used in water, steam, oil, acid, alkali and other media.
Product characteristics
H77X soft seal butterfly check valve: The seat is designed with multiple narrow bands. The seat is vulcanized directly to the valve body, which greatly improves the sealing performance and achieves complete sealing and zero leakage.
H76W type hard seal butterfly check valve: Seat sealing surface is the same as the material of the valve body, and precision grinding technology is adopted to adapt to high temperature and high pressure conditions.
H77J butterfly check valve with soft sealing lining: The inner cavity of the valve is lined with skeleton rubber, which not only improves the anti-corrosion performance of the valve, but also replaces all-metal valves within the allowable temperature range and reduces the cost of the project.
The material of main parts and components can be selected in a wide range of media. The inner and outer surface of the valve is sprayed with epoxy resin, which has excellent corrosion resistance.
Structural length is short, rigidity is good and installation is convenient.
It is suitable for high-rise building water supply network, sewage network, pipeline network with certain chemical corrosive medium, and pipeline network with limited installation space.
