Hard-sealed butterfly valve
, also known as flap valve, has a simple structure and can be used for on-off control of low-pressure pipe media. The hard sealing butterfly valve mainly plays the role of cutting off and throttling on the pipeline. The switching tool of the butterfly valve is a disc-shaped butterfly plate, which rotates its own axis in the valve body to achieve the purpose of switching and adjustment. Hard-sealed butterfly valve is suitable for production furnace, gas, gas, natural gas, city gas, cold and hot air, chemical smelting engineering and power generation environmental systems, suitable for pipelines conveying various corrosive and non-corrosive fluid media, for adjustment and resistance. interrupt the flow of the medium. Hard-sealed butterfly valves are divided into manual hard-sealed butterfly valves, pneumatic hard-sealed butterfly valves, and electric hard-sealed butterfly valves. The disc of the hard-sealed 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 in a fully open state. Working principle: Sealed butterfly valve is a kind of valve that realizes the opening and closing of the pipeline by combining the circular butterfly plate (sealing part) with the rotation of the valve shaft. The use of hard-sealed butterfly valves in low-pressure large and medium-diameter pipelines has increased. The hard-sealed disc of the butterfly valve is installed in the diameter direction of the pipe. 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 hard-sealed butterfly valve has a simple structure, small size and light weight, and is composed of several components. In addition, it only needs to rotate 90° to switch at high speed, the operation is simple, and the electric valve has good fluid control characteristics. When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance that flows through the valve body, so there is less pressure drop across the valve and therefore better flow control characteristics. Butterfly valves have bullet seals and metal seals. Elastomeric sealing valves, sealing rings can be installed around the valve body or butterfly plate. Features: Due to the limitation of structural characteristics, the hard-sealed butterfly valve is not suitable for industries such as high temperature resistance, high pressure, corrosion resistance and wear resistance. The multi-layer soft stacked sealing 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, which improves the sealing performance of the butterfly valve and prolongs its service life. This time, I will introduce some introductions of hard sealing butterfly valves. Do you know anything about it? If you have any questions, you can consult Lianke Valve Co.,Ltd., contact: +86-577-8585 9626.
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