| 摘要 |
A pipe plugger disclosed includes a sealing element that can be expanded inside the pipe to plug off a range of pipe diameters. The element is inserted into a pipe, relaxed and unexpanded, through an opening of uniform diameter. This allows pipe tapping equipment for cutting a side opening of one diameter to be used with a range of pipe sizes, which results in a considerable reduction in the equipment required to handle plugging operations in a variety of pipe diameters. |
