The wafer butterfly valve itself does not have a flange and is connected by pressing the pipe flange. Generally, stud bolts are used for connection. The flange butterfly valve itself has a flange, which is the same as ordinary gate valves. The function is similar, and it is used in the sulfuric acid industry to regulate and cut off gas flow in gas pipelines: inlet and outlet of furnace front blower, outlet and inlet of relay blower, series connection and connecting valve for electric demister, inlet and outlet of S02 main blower, converter regulation, preheater inlet and outlet, etc. Used in the sulfur burning, conversion, and dry absorption sections of the sulfur based sulfuric acid system, it is a brand of valves used in sulfur based sulfuric acid plants. It is widely recognized by users as a butterfly valve with good sealing performance, light operation, side corrosion, high temperature resistance, convenient operation, flexibility, and safe and reliable use, and has been widely promoted and used.
The flange butterfly valve has simple structure, small volume, and light weight, and consists of only a few parts. Moreover, it only needs to rotate 90 ° to quickly open and close, and the operation is simple. At the same time, the valve has good fluid control characteristics. The butterfly plate of the 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, with a rotation angle between 0 ° and 90 °. When it rotates to 90 °, the valve plate is fully open. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the resistance of the medium flowing through the valve body, so the pressure drop generated by passing through the valve is very small, so it has good flow control characteristics. Butterfly valves have two sealing types: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be embedded in the valve body or attached to the periphery of the butterfly plate.
