Cherne 3" - 4" MS2 Long Test Ball Plug

Cherne MS2 Long Test-Ball Plugs are designed for waste stack testing from the floor drain to the sewer pipe. The multi-size design is for use in various pipe diameters. These long ball plugs can also be used to seal the wye to conduct sewer air tests. The plug seals lateral during sewer air tests. The multi-stage designed plug top inflates first and deflates last to eliminate backsplash. The integrated relief valve reduces the possibility of over-inflation. Molded-in sealing ribs at each end of the plug ...