butterfly plate installed in pipeline diameter direction of the electric butterfly valve. In butterfly valve body cylindrical passage, pivoting butterfly butterfly plate, Angle of rotation in 0 Between 90, when the rotation to 90, the valve is in the fully open position. The butterfly valve has simple structure, small volume, light weight, only by a few parts. Only rotate 90 degrees, the valve can be opened and closed fast. Simple operation, good flow control characteristics. When the butterfly valve in the fully open position, the butterfly plate thickness is the only resistance when the medium flows through the body, so the valve pressure drop is small, has good flow control characteristics. Butterfly valve elastic seal and metal seal. Elastic seal valve, sealing ring can be embedded in the body or attached to the butterfly plate. Metal sealing electric butterfly valve is generally than elastic seal service life is long, but it is difficult to realize completely sealed. Metal sealing can adapt high working temperature, and the elastic sealing temperature limitation defects. If you require the use of butterfly valve as flow control, main is to choose the correct size and type of the valve. The structure of the butterfly valve principle, especially suitable for large diameter valve manufacturing. Butterfly valve is not only widely used in petroleum, natural gas, chemical industry, water treatment and other general industries, but also used in coal-fired power plant cooling water system. Commonly used butterfly valve butterfly valve and flanged butterfly valve. Clamping type butterfly valve through the stud bolt connection in place between two pipe flanges. Flanged butterfly valve flange on the valve. At the ends of the valve flange bolts through the pipe flange connection.

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