Electric cast steel flange hard seal butterfly valve adopts precision J elastic sealing ring and triple eccentric metal hard seal structure, multi-level is widely used in medium temperature of 425 ℃ or less metallurgy, electric power, petrochemical industry, water supply and drainage, and municipal construction and other industrial pipelines, used to adjust flow cutoff and body. Triple eccentric structure is used in the valve seat and disc plate sealing surface are made of different hardness and stainless steel has good corrosion resistance, long service life, this valve army post two-way sealing function, products meet the national valve pressure test standard GB/T13927-92.

1, the valve adopts triple eccentric seal structure, the seat and disc almost no wear and tear, with functions of view more and more tightly sealed.

2, selection of sealing ring made of stainless steel, has the dual advantages of metal hard seal and elastic sealing, no matter in the case of low and high temperature, has good sealing performance, corrosion resistance, long service life, etc.

3, disc plate sealing surface using cobalt-based carbide surfacing, sealing surface wear resistance, long service life.

4, large size butterfly plate adopts the structure supporting structure, high strength, large flow area, small flow resistance.

5, this valve has two-way sealing function, installation is not restricted by medium flow direction, and is not affected by spatial location, can be installed in any direction.

6, driving device can transfer (rotate 90 ° or 180 °) installation, making it easy for users to use.