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AssigneeDongbao Valve Co., Ltd.
InventorsYu Liu, Jiawei Chu, Haizhang Zhang, Shize Gu, Jiangtao Liu, Yuanhui Luo, Yong Zhang, Weihui Zuo, Weiguang Shen
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A high-pressure self-sealing butterfly valve, which comprises a valve body and a valve shaft, wherein a flow channel and a butterfly plate are arranged in the valve body, a pure metal sealing ring and a pure metal valve seat are sequentially arranged at a portion, on the outer side of the butterfly plate, of the flow channel, a piston cavity is further formed in a flow direction end face of the pure metal valve seat, and an upper valve shaft and a lower valve shaft are arranged at the upper end and the lower end of the valve shaft respectively; an upper end cover assembly and an upper self-sealing assembly are arranged between the end part of the upper valve shaft and the valve body, a lower sealing bottom cover and a lower self-sealing assembly are arranged between the end part of the lower valve shaft and the valve body.
A high-pressure self-sealing butterfly valve, comprising:
Dependencies are inferred from the claim text.