A valve assembly

Details A valve assembly A valve assembly

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 1/20 (2006.01) E21B 34/06 (2006.01) F16K 15/03 (2006.01) F16K 15/18 (2006.01)

Patent

CA 2715327

A valve assembly (10) comprises a drillpipe (11) defining a hollow, generally cylindrical interior having secured therein a valve member (12) that is moveable between an open position, permitting passage of an object through the valve (10), and a closed position preventing passage of fluids along the drillpipe (11). A resiliently contractile arm (17) interconnects the valve member (12) and the drillpipe (11) so as to urge the valve member (12) towards the closed position and such that when an object passes along the drillpipe (11) and engages the valve member (12) or the arm (17) the valve member (12) occupies the open position.

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