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56 条记录 (耗时 0.016 秒)

    Butterfly valve
    1.
    发明授权
    Butterfly valve 失效
    蝶阀

    公开(公告)号：US3692276A

    公开(公告)日：1972-09-19

    申请号：US3692276D

    申请日：1971-05-27

    申请人： JENKINS BROS

    发明人： CONNERS JOHN A ,  LIEPELT DONALD W ,  BAULIEU WILLIAM H

    IPC分类号： F16K1/226 ,  F16K1/22

    CPC分类号： F16K1/2265

    摘要： Butterfly valve assembly for installation in a pipe line between flanges. Assembly includes rigid tubular valve body and resilient valve seat insert to make tight seal with flanges when installed and to make tight seal with valve disc in service. Seat insert has certain dimensions undersize relative to valve body so that insert may be stretched when fitted to body and is further stretched when flanges are tightened during installation. Stretching assures secure fit between insert and body before installation and leak proof seal after installation. Seat insert and valve body have cooperating radial ledges asymmetrically located to prevent relative movement when valve disc is closed.