The Flow-through Plug was introduced over 50 years ago and the Cherne brand continues to be the most trusted name in pneumatic plugs today. Flow-through Plugs offer a full bypass allowing both testing and monitoring of piping systems. Muni-Balls are ideal for installation and repair of residential or commercial piping systems. Cherne Flow-through products can also be used for maintenance of municipal infrastructure, including sanitary and storm sewer pipe systems. Flow-through plugs are durable, rugged and are effective on almost any type of pipe.
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