Fluid handling – Processes – Cleaning – repairing – or assembling
Patent
1995-07-05
1998-08-11
Walton, George L.
Fluid handling
Processes
Cleaning, repairing, or assembling
137317, 137318, 30 925, 30 93, 138 93, 138 97, 279128, 408239R, 408713, F16K 4300, F16L 55128
Patent
active
057913641
ABSTRACT:
An inflatable gas pipeline stopper is used for stopping gas flow through pipelines to permit repairs to be made to gas pipelines. For plastic gas pipelines, a tapping tee is attached to the plastic gas pipeline and a gas tight apparatus having a valve is attached to the tee. Thereafter, the plastic gas pipeline can be cut with a pipe cutter that is engaged with a hexagonal head and magnetic attachment to be operated from the exterior of the air tight apparatus. The pipe cutter can be removed from the air tight apparatus and the valve of the air tight apparatus closed to prevent gas from escaping from the pipeline. The inflatable gas pipeline stopper with dual air bags can then be inserted into the plastic gas main, through the air tight apparatus and the tee, to stop the flow of gas through the pipeline. After repairs on the pipeline are complete, the inflatable gas pipeline stopper can be removed, the tee can be stopped, and the air tight apparatus can be removed.
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Custom Service Laboratories of N.J., Inc.
Walton George L.
LandOfFree
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