Double eccentric butterfly valve in the single eccentric butterfly valve based on further improvement. Its structural feature is that the valve rod axis deviates from the center of the butterfly plate as well as the center of the valve body. Double eccentric effect of the valve is opened, the disc can be quickly separated from the valve seat, a substantial elimination of disc and valve seat unnecessary over-squeeze, scratch phenomenon, reducing the open resistance, reducing wear and tear, improve Seat life. Significantly reduce scratches, but also makes double-eccentric butterfly valve can also be used metal seat to improve the butterfly valve in the field of high temperature applications. .
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