Cherne 041386 8" Test-Ball Plug 17 PSI, 40 FT

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.

Ideal for plumbing system tests. Easy to install with extra-large wing nut. Inside of pipe seals inside pipe as far as needed. Made with glass-reinforced ABS plastic. End-of-pipe seals only at the end of a pipe, preventing plug from falling into stack.

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.

Works in all types of pipe. Easily converts to an air test plug with use of a conversion kit. Durable natural rubber construction seals the roughest of surfaces. Threaded aluminum bypass.

Large male NPT threaded bypass. Equipped with removable 3/8" eye bolt for lifting and lowering with a poly-lift line. Removable tire valve allows for easy replacement. Lightweight aluminum bypass.