The flange connection should be maintained on the same axis, the center deviation of the bolt hole should not exceed 5% of the aperture, and the bolt should be freely perforated.
2025-04-14
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Butterfly valve is a kind of valve that opens and closes according to the rotating valve stem and drives the disc plate to rotate at the same time. In the cylindrical channel of the butterfly valve body, the disc plate rotates around the axis, mainly rotating the disc plate 90* to do flow control.