First, the characteristics of metal hard seal butterfly valve:
1, metal hard seal butterfly valve with three eccentric sealing structure, valve seat and butterfly plate almost no wear, with the more close the tighter sealing function;
2, the sealing ring is made of stainless steel, with the double advantages of metal hard seal and elastic seal, both at low and high temperature, has excellent sealing performance, corrosion resistance, long service life and so on;
3. The sealing surface of the butterfly plate adopts surfacing cobalt-based hard alloy, which has wear resistance and long service life.
4, large size butterfly plate adopts truss structure, high strength, large flow area, small flow resistance;
5, the valve has bidirectional sealing function, installation is not limited by the medium flow direction, also not affected by the spatial position, can be installed in any direction;
Two, metal hard seal butterfly valve structure:
Hard metal seal butterfly valve for eccentric metal seal structure, the sealing form is metal to metal seal, metal sealing ring can be replaced, stainless steel plate and graphite composite plate sealing ring to metal seal. Metal hard seal butterfly valve drive form in addition to electric: manual, worm gear drive, pneumatic, etc.