Cherne ® I-Series Test-Ball ® Blocking Plug 12-24 in, 15 PSI
Estimated delivery Jul 28 – Jul 30· freight quoted separately
- Volume / custom config? Call (866) 514-3684 or request a quote
Description
The Cherne I-Series Test-Ball 12"-24" (part #310-248) is a premium multi-size pneumatic blocking plug covering 12" through 24" sewer and storm pipe. Rated for 15 PSI at 45 PSI inflation. At 26.9 lbs and ~37" deflated, this is a major plug for large-bore municipal mains. Usage range 11.00"–24.25" ID. Premium natural rubber bonded to aluminum end plates with field-replaceable pressure relief valve.
Key Features
- I-Series premium construction — natural rubber bonded to aluminum end plates with full body cording
- Multi-size coverage — one plug covers multiple pipe diameters
- 15 PSI / 35 ft. head — rated for sewer air pressure testing
- Full blockage — complete shutoff, no bypass
- 3/4" eyebolts + field-replaceable pressure relief valve (larger sizes)
Applications
Municipal sewer air pressure testing, storm drain isolation, large-diameter pipe blocking during construction and repair, and compliance testing on trunk mains. Deploy through manholes using eyebolts and poly-lift line. Always follow Cherne inflation and back-pressure guidelines — never exceed rated pressures.
Questions on sizing or bulk pricing? Call (866) 514-3684 or email us — we ship within the USA and welcome tax-exempt purchasing for qualified accounts.
Specifications
| Type | Blocking Plugs |
|---|---|
| SKU | 310248 |
| Availability | Available to order |
| Bypass | None (full blockage) |
| Weight | 26.9 lbs |
| Body Material | Premium natural rubber, aluminum end plates |
| Deflated Length | ~37" |
| Pipe Size Range | 12"-24" |
| Max Back Pressure | 15 PSI / 35 ft. |
| Inflation Pressure | 45 PSI |
| Operating Temperature | 0°F to 125°F |
| Usage Range (pipe Id) | 11.00–24.25" |