| 摘要 |
A method and apparatus for temporarily stopping the flow of a fluid issuing from a live conduit includes a plug device which can be manually inserted into the flowing pipe to stop the flow of fluid temporarily while the pipe is repaired, for example. The plug is designed to remain in the pipe and dissolve within a predetermined time under contact with the particular fluid in the live pipe such that, in time, normal flow of pipe fluid is resumed.
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