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What is the difference between a Muni-Ball and a Test-Ball inflatable plugs?
The Muni-Ball is equipped with a port through the length of the plug that can be used to allow water or air to flow through the plug. This port is normally capped with a threaded plug. This allows the user to bypass sewage around a section of pipeline by connecting a hose to a Muni-Ball positioned on either side of the affected pipeline or manhole and pumping the sewage around it.
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