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The Structure of Electric Butterfly Valve, Applicable Environment Specific Analysis

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The butterfly plate of the electric butterfly valve is mounted in the diameter direction of the pipe. In the cylindrical passage of the electric butterfly valve, the disc shaped butterfly plate is rotated around the axis, and the rotation angle is between 0 and 90 °, and the valve is in a full open state when rotating to 90 °.

The electric butterfly valve has a simple structure, small size, light weight, consisting only of a few parts. Moreover, only the rotation of 90 ° can be quickly opened, the operation is simple, and the valve has good fluid control characteristics. When the electric butterfly valve is in full open position, the thickness of the butterfly plate is the only resistance of the medium flowing through the valve body, so the pressure generated by the electric butterfly valve is small, so there is a good flow control characteristic. The electric butterfly valve is elastic seal and two sealing types of metal sealing. Elastic seal butterfly valve, the seal can be inlaid on the valve body or attached to the periphery of the butterfly.

Valves with metal sealed valves are generally longer than the elastic seal, but it is difficult to completely seal. Metal sealing can adapt to higher operating temperatures, and the elastic seal has a defective defects under temperature limit.

If the electric butterfly valve is required to be used as a flow control, the main is to correctly select the size and type of the valve. The structural principle of the electric butterfly valve is especially suitable for making large diameter valves. The electric butterfly valve is not only widely used in general industries such as petroleum, gas, chemical, and water treatment, but also the cooling water system of the thermal power station.

Commonly used electric butterfly valve has two types of clip electric butterfly valve and flanged electric butterfly valve. Pairing the pinch-type electric butterfly valve is between the two-tube flanges with a double bolt, and the flange-type electric butterfly valve is a flange on the valve, and the flanges on the valve are connected to the pipe flange with bolts.

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