The D373H and D373Y-type butterfly valves adopt a precise J-shaped elastic sealing ring and a three-eccentric multi-layer metal hard seal structure, which is widely used in metal treatment, electric power, petrochemical, water supply and drainage and municipal construction and other industrial pipelines with medium temperature ≤ 425℃ for regulating flow and load-off fluid. 

 [Product Features] 

 1. The butterfly valve adopts a three-eccentric sealing structure. The seat and the butterfly plate are almost wear-free, and it has a tighter sealing function. 

 2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. Regardless of low temperature and high temperature, it has excellent sealing performance, corrosion resistance and long service life. 

 3. The sealing surface of the butterfly plate is made of surfacing cobalt-based cemented carbide, which is wear-resistant and has a long service life. 

 4. The large-scale butterfly plate adopts a kilted frame structure, with high strength, large overcurrent area and small flow resistance. 

 5. The clip-on hard seal butterfly valve has a two-way sealing function. When installed, it is not limited by the flow direction of the medium, nor is it affected by the spatial position. It can be installed in any direction.

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.