The butterfly valve's disc is mounted in the diameter direction of the pipe. In the cylindrical passage of the butterfly valve body, the disc-shaped disc rotates around the axis, and the rotation viewpoint is between 0° and 90°. When rotated to 90°, the valve is fully open. The butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. And only need to rotate 90 ° to quickly open and close, the operation is simple, together with the valve has good fluid handling characteristics.

When the butterfly valve is in the open orientation, the thickness of the disc is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics. The butterfly valve has two sealing types: a spring seal and a metal seal. Elastomeric sealing valve, the sealing ring can be mounted on the valve body or attached to the periphery of the disc.

Valves with metal seals generally have a longer life than elastomer-sealed valves, but are difficult to fully seal. Metal seals can accommodate higher operating temperatures and elastomeric seals have temperature-constrained disadvantages. If the butterfly valve is required to be used as a flow control, the first thing is to correctly select the size and type of the valve.

The structural principle of the butterfly valve is particularly suitable for making large diameter valves. Butterfly valves are widely used not only in general industries such as petroleum, gas, chemical, and water treatment, but also in cooling water systems for thermal power plants. Common butterfly valves are clip-on butterfly valves and flanged butterfly valves. The wafer type butterfly valve uses a stud bolt to connect the valve between the two pipe flanges. The flange type butterfly valve has a flange on the valve, and the flanges on both ends of the valve are connected to the pipe flange by bolts.

Shanghai Gaocheng Valve Manufacturing Co., Ltd. is a comprehensive enterprise integrating scientific research, design, manufacture, sales and service. It specializes in producing pneumatic butterfly valves, electric actuators, electric ball valves and electric butterfly valves. The pneumatic ball valves are available in various models and at affordable prices. Extensive production and sales experience in the field of industrial automation valves.

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