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.
Product Specifications:
| Nominal Size: | 8 in. (200 mm) |
| Deflated Diameter: | 6.75 in. (171 mm) |
| Deflated Length: | 10.25 in. (257 mm) |
| Maximum Back Pressure: | 17 PSI / 40 ft. |
| Usage Range: | 7.00 in. - 8.25 in. (178 - 210 mm) |
| Chain Eye Bolts: | 3/8" |
| Inflation Pressure: | 25 psi (1,7 bar) |
| Inflation Thread: | 1/4 in. (1) |