Cherne® Single-Size Underground Test-Ball® Plugs are designed for blocking flow, allowing for maintenance in sanitary and storm sewer systems. These plugs may also be used as a back plug for sewer air tests. Cherne Industries is a global leader in pipe plugs, blocking and testing.

• Single-Size Underground Test-Ball® Plugs are made of natural rubber material 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
• Features an eye-bolt for use with a poly-lift line
• Use to block flow or as a back plug for sewer air testing
• Available in multiple sizes
• Holds 40 ft of head and back pressure to 17 PSI