Cherne® I-Series Muni-Ball® Plug 4-8 in w/ 3/4 in Bypass
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 Muni-Ball 4"-8" with 3/4" Bypass (part #311-088) is a premium multi-size pneumatic bypass plug for 4" through 8" sewer pipe. The 3/4" bypass allows controlled flow during testing. Rated for 15 PSI at 45 PSI inflation. Premium natural rubber bonded to aluminum end plates. At 7.0 lbs, it covers the most common residential and light commercial sewer sizes with one plug.
Key Features
- I-Series premium construction — natural rubber bonded to aluminum end plates
- 3/4" bypass — controlled flow-through during testing
- 15 PSI rated — for sewer air pressure testing
- Pneumatic inflation — natural rubber seals round and out-of-round pipe
Applications
Municipal sewer air pressure testing, storm drain isolation, large-diameter pipe testing during construction and repair, and compliance testing on trunk mains. Always follow Cherne inflation and back-pressure guidelines.
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 | Bypass Plugs |
|---|---|
| SKU | 311088 |
| Availability | Available to order |
| Weight | 7.0 lbs |
| Bypass Size | 3/4" |
| Body Material | Natural rubber, aluminum end plates |
| Deflated Length | ~23" |
| Pipe Size Range | 4"-8" |
| Max Back Pressure | 15 PSI |
| Inflation Pressure | 45 PSI |
| Usage Range (pipe Id) | 3.95–8.25" |