Wafer Soft Seal Butterfly Valve
The thickness of the electric wafer butterfly valve is thinner than that of the flange butterfly valve. There are no flanges at both ends of the valve body, only a few guide bolt holes. The valve is connected to the flange at the pipe end with a set of bolts/nuts, which is generally applicable Suitable for places with narrow space or restricted pipelines. The advantage is that it is easier to disassemble, the valve cost is lower, and it takes up less space. However, the disadvantage is that if there is a problem with one sealing surface, both sealing surfaces have to be disassembled!
At present, as a component used to realize the on-off and flow control of pipeline systems, soft-seal butterfly valves have been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. In the known butterfly valve technology, its sealing form mostly adopts a sealing structure, and the sealing material is rubber, polytetrafluoroethylene, etc. Due to the limitation of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance. A relatively advanced butterfly valve is a three-eccentric metal seal butterfly valve. The valve body and valve seat are connected components, and the valve seat sealing surface layer is welded with heat-resistant and corrosion-resistant alloy materials. The multi-layer soft stacking seal ring is fixed on the valve plate. Compared with the traditional butterfly valve, this butterfly valve has the advantages of high temperature resistance, easy operation, no friction when opening and closing, and the seal is compensated as the torque of the transmission mechanism increases when closing, which improves the sealing performance of the butterfly valve and prolongs its service life.
There are flanges at both ends of the electric flange butterfly valve body, which are connected to the pipeline flange. The sealing performance is more reliable than that of the wafer butterfly valve. It is generally used in places with larger diameters or higher pressures, but the cost is relatively low. Clamp butterfly valve high.
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