Check valve assembly

Details Check valve assembly Check valve assembly

E - Fixed Constructions

21

B

166/42

E21B 34/06 (2006.01) E21B 33/129 (2006.01) E21B 34/10 (2006.01) E21B 49/00 (2006.01)

Patent

CA 1145250

IMPROVED CHECK VALVE ASSEMBLY ABSTRACT An improved check valve assembly for use in a well bore comprising an outer annular housing, sliding mandrel slidably disposed within the bore of the outer annular housing, check valve seal means retained on the exterior of the outer annular housing and shear means disposed within the outer annular housing having a portion engaging the sliding mandrel and the outer annular housing.

367555

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