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The Structure Principle Of Butterfly Valve

Sep 05, 2017

     Electric butterfly valve schematic diagram butterfly valve is a valve that uses a circular butterfly plate to open, close and regulate the fluid passage with the valve stem turning. Butterfly Valve's butterfly plate is installed in the diameter direction of the pipe. In the butterfly valve body cylindrical passage, the disc-shaped butterfly plate rotates around the axis, the rotation angle is 0°~90°, and the valve is Cheng open when rotating to 90°.Butterfly Valve

     Butterfly valve working principle and special butterfly valve with simple structure, small size, light weight, material consumption of the province, installation size is small, switch quickly, 90° reciprocating rotation, driving torque is small and so on, used to truncate, connect, adjust the media in the pipeline, has a good fluid control characteristics and closed sealing performance.Butterfly Valve

     Butterfly valve is in full open position, the butterfly plate thickness is the medium flow through the valve body when the only resistance, so through the valve produced by the pressure drop is very small, it has a good flow control characteristics. The butterfly valve has two sealing types, which are sealed with the elastic seal and the metal. Elastomeric seal Valves, seals can be embedded in the body or attached to the perimeter of the butterfly plate. Valves with metal seals generally have a longer life than elastomeric seals, but it is difficult to fully seal them. The metal seals can adapt to the high working temperature, and the elastic seal has the limitation of temperature. If the butterfly valve is required to be used as flow control, the main thing is to select the correct size and type of valve.Butterfly Valve

     The structure principle of the butterfly valve is especially suitable for making large caliber valves. Butterfly valve not only in petroleum, gas, chemical, water treatment and other general industries have been widely used, but also used in thermal power plant cooling water system. Commonly used butterfly valve has wafer type butterfly valve, flange type butterfly valve, butt-weld butterfly valve three kinds. Butterfly Valve

     The wafer-type butterfly valve is connected between the two pipe flanges with a double head bolt; the flange butterfly valve is flanged on the valve, with a bolt connecting the flange of the valve on the pipe flange, and connecting the two ends of the welded butterfly valve with the pipe. The streamline design of the butterfly plate makes the fluid resistance loss small, it is a kind of energy-saving product.Butterfly Valve