E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
166/41
E21B 34/06 (2006.01)
Patent
CA 1145249
ABSTRACT A manually operated valve has a housing with a uniform outside diameter compatible with the outside diameter of flow conductors attached to the valve. An operating sleeve is movable longitudinally within the housing by engagement with a shifting tool from the exterior of the housing. The operating sleeve shifts the valve between its open and closed positions. A detent spring is provided to give an indication when the shifting tool has moved the operating sleeve sufficiently to fully open or close the valve. The valve is particularly adapted for using in a drill string or workover string in an oil or gas well.
364926
Otis Engineering Corporation
Smart & Biggar
LandOfFree
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