PLUG VALVE INDICATOR
    3.
    发明公开
    PLUG VALVE INDICATOR 有权
    HAHNVENTILANZEIGE

    公开(公告)号:EP2438338A2

    公开(公告)日:2012-04-11

    申请号:EP10784052.2

    申请日:2010-06-03

    CPC classification number: F16K37/0008 F16K5/0442 F16K37/0016 Y10T137/8292

    Abstract: A valve has a body having a rotatable valve element. A drive mechanism has a drive input member and a drive output member that are coupled to the valve element for rotating the valve element. A shear member is operatively located within the drive mechanism between the drive input member and the drive output member for shearing in the event the force to rotate the valve element is excessive. The valve has indicia indicating open and closed positions for the valve element An indicator is mounted to output drive member to properly align with the indicia regardless whether the shear member has sheared or not.

    FLOWLINE FLAPPER VALVE
    4.
    发明公开
    FLOWLINE FLAPPER VALVE 有权
    流线拍门

    公开(公告)号:EP2422120A2

    公开(公告)日:2012-02-29

    申请号:EP10767632.2

    申请日:2010-04-20

    Abstract: A check valve assembly has a body having a central cavity intersected by upstream and downstream flow passages. A seat is secured by a threaded engagement in the upstream flow passage. An access bore intersects the cavity and has a support shoulder formed in it. A holder is supported on the support shoulder. A flapper is pivotally secured to the holder and located in the cavity for movement between an open position and a closed position blocking flow through the seat. A straight edge portion in the access bore engages a straight edge portion of the holder to prevent rotation of the holder. A fastener extends through a hole in the support shoulder into engagement with the seat to prevent rotation of the seat.

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