The disc of the fluorine-lined butterfly valve
The disc of the fluorine-lined butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0 and 90. When it rotates to 90, the valve is fully open. The characteristics of the new high-life stainless steel butterfly valve and the problems in the use of the butterfly valve At present, the fluorine-lined butterfly valve and the rubber-lined butterfly valve, as a forging and processing part used to realize the on-off and flow control of the pipeline system, have been used in petroleum, chemical industry, metallurgy It has been widely used in many fields such as hydropower. In the known butterfly valve technology, the sealing form mostly adopts the 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, corrosion resistance and wear resistance. A relatively advanced butterfly valve in aluminum silicate equipment is a triple eccentric metal hard-sealed butterfly valve. The valve body and the valve seat are connected components, and the sealing surface layer of the valve seat is surfacing with temperature-resistant and corrosion-resistant alloy materials. Compared with the traditional butterfly valve, this kind of butterfly valve has high temperature resistance, easy operation, no friction when opening and closing, and compensates the sealing with the increase of the torque of the transmission mechanism when closing. The sealing performance of the butterfly valve and the advantages of prolonging the service life are improved. This type of valve should generally be installed horizontally in the pipeline.
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