At present, as a component used to realize the on-off and flow control of pipeline system, butterfly valve has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower and so on.

However, due to the limitation of its structural characteristics, it is not suitable for high temperature resistance, high pressure resistance, corrosion resistance, wear resistance and other industries. There is a more advanced butterfly valve, namely the high performance triple eccentric two-way hard sealing butterfly valve. Compared with the traditional butterfly valve, it has the advantages of high temperature resistance, light operation, frictionless opening and closing, high sealing performance and long service life.

Characteristics of High Performance Triple Eccentric Two-way Hard Sealing Butterfly Valve：

1. The valve seat seal ring is composed of multiple layers of stainless steel sheets on both sides of the soft T-shaped seal ring, which has the dual advantages of metal hard seal and soft seal, and has zero leakage sealing performance at low and high temperatures.

2. The sealing surface of the valve plate and the valve seat is an inclined cone structure, and the surface of the inclined cone of the valve plate is overlaid with heat-resistant and corrosion-resistant alloy materials.

3. The spring fixed between the pressing plates of the adjusting ring is assembled with the adjusting bolt on the pressing plate. This structure effectively compensates the elastic deformation of the valve stem under medium pressure caused by the tolerance between the shaft sleeve and the valve body.