The butterfly plate of the rubber-lined butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the valve body of the butterfly valve, the disc-shaped butterfly plate rotates around the axis of the valve stem. The rotation angle is between 0 ° and 90 °. When it is rotated to 90 °, the valve is fully open. This type of valve should generally be installed horizontally in the pipeline.
At present, rubber-lined butterfly valves have been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. In the well-known butterfly valve technology, the sealing form mostly adopts a sealing structure, and the sealing material is rubber, polytetrafluoroethylene and the like. Due to the limitation of structural characteristics, it is not suitable for industries such as high temperature, high pressure, corrosion resistance, and wear resistance. An existing more advanced butterfly valve is a three-eccentric metal hard-sealed butterfly valve. The valve body and the valve seat are connected components. The sealing surface layer of the valve seat is welded with temperature-resistant and corrosion-resistant alloy materials. The multi-layer soft stack type sealing ring is fixed on the valve plate. Compared with the traditional butterfly valve, this butterfly valve has high temperature resistance, easy operation, no friction when opening and closing, and the torque of the transmission mechanism when closing.
1. Novel design, reasonable, unique structure, light weight, quick opening and closing.
2. The operating torque is small, the operation is convenient, and the labor-saving and dexterous.
3. It can be installed in any position, easy maintenance.
4. Seals can be replaced, and the sealing performance is reliable to achieve zero leakage in two-way sealing.
5. The sealing material is resistant to aging, corrosion and long service life. Use standard
