Cherne 270040 Rubber Test Ball Pipe Plug, 4" , Black

Tests DWV systems at pressures up to 13 PSI/30 ft.

Natural rubber body provides excellent expansion Inflatable design can be inserted through a test tee to seal out-of-round pipe and hard-to-access openings Utilizes a standard tire air fitting for easy connections Ring and chain assembly helps prevent the plug from being drawn into DWV systems during tests Made of natural rubber for excellent expansion and memory.

Seals both round and out-of-round pipe.