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 its inception nearly 70 years ago, the Cherne pipe plug offering has expanded to include testing, maintenance, and repair equipment for plumbing and municipal sewer markets in the United States. Cherne now offers two pipe plug types: pneumatic and mechanical, covering pipe sizes from .39 inch to 96 inches.Pipe plugs are used to stop or redirect the flow of wastewater during maintenance and testing in DWV (drain, waste and vent) and
