Cherne 265048 4"- 6" Muni-Ball Plug 3/4" Bypass, 17 PSI, 40 FT

Multi-Size Test-Ball Plugs (Underground). Features: One plug fits multiple pipe diameters. Made of natural rubber for excellent expansion and memory. Seals both round and out-of-round pipe. Removable inflation valve can be replaced if damaged or replaced with quick disconnect fitting. Use to block flow or as a back plug for sewer air testing.

Multi-Size Test-Ball Plugs (Underground). Features: One plug fits multiple pipe diameters. Made of natural rubber for excellent expansion and memory. Seals both round and out-of-round pipe. Removable inflation valve can be replaced if damaged or replaced with quick disconnect fitting. Use to block flow or as a back plug for sewer air testing.

Designed for waste stack testing from floor drain to sewer pipe. Long enough to seal away vertical riser and sewer run. Includes 3' extension hose. Ring and chain assembly prevents plug from sliding down a line.

Smaller deflated diameter. Improved hardware for more strength. Shorter length. Additional bypass sizes available. 20-40" and larger sizes feature patented, field-repairable rupture disc technology to eliminate over-inflation risk.

Multi-Size Test-Ball Plugs (Underground). Features: One plug fits multiple pipe diameters. Made of natural rubber for excellent expansion and memory. Seals both round and out-of-round pipe. Removable inflation valve can be replaced if damaged or replaced with quick disconnect fitting. Use to block flow or as a back plug for sewer air testing.