![Pneumatic vs. Mechanical Pipe Plugs](https://cole-mswmag.imgix.net/https%3A%2F%2Fwww.mswmag.com%2Fuploads%2Fimages%2Fdanger_zone1.jpg?crop=focalpoint&fit=crop&fp-x=0.5&fp-y=0.5&h=620&ixlib=php-1.1.0&q=75&w=1024&s=3d3b7abe6030c12cc4b183025be6a753)
Pneumatic pipe plugs are most often used for blocking, bypassing, conducting line acceptance or leak-location testing using air.
In 1953, while working on an institutional job, Lloyd Cherne vulcanized a tire’s Schrader valve to a child’s inflatable rubber ball to create the first-ever pneumatic plumber’s test plug.
Since then, the use of both pneumatic and mechanical pipe plugs has expanded for...