Method and apparatus for sealing a pipeline

Details Method and apparatus for sealing a pipeline Method and apparatus for sealing a pipeline

G - Physics

01

N

73/118, 116/66.1

G01N 19/08 (2006.01) F16L 55/10 (2006.01)

Patent

CA 1171686

ABSTRACT A method and apparatus for sealing a pipeline is disclosed. A spherical member is advanced by pressure along the interior of a pipeline to seat against a restraining member forming a pressure-tight seal. The advancing pressure may then be increased within the pipeline to monitor for leaks in the upstream section of the pipeline. The spherical member is easily retrieved by back pressuring in the downstream section of the pipeline thereby dislodging the spherical member from the restraining member.

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