Flapper valve assembly with floating hinge

Details Flapper valve assembly with floating hinge Flapper valve assembly with floating hinge

1992-06-19

1994-05-10

Dang, Hoang C.

Wells

Valves, closures or changeable restrictors

Longitudinally movable operator

137527, 166242, 166323, 166332, 175318, 251303, E21B 3414, E21B 3412

Patent

active

053100050

ABSTRACT:
A flapper valve assembly for use in a flow conduit in a subterranean well, the assembly having a valve closure member pivotally connected to a floating hinge assembly that slidably engages a sleeve comprising the valve seat. A strut assembly comprising circumferentially spaced struts pivotally connected to the valve closure member away from the floating hinge member and pivotally connected to a spring guide surrounding the flow conduit is also provided, and is biased to force the valve closure member toward the closed position.

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