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Cherne 8" Muni Ball Plug, 3" Bypass
The Cherne 8" Muni-Ball Plug (part #262-080) is a pneumatic bypass plug for 8" sewer pipe with a 3" NPT female bypass for maximum flow capacity during testing. Rated for...
$ 286.85
Enchufe esférico Cherne 4" Muni, 3/4" Bypass
The Cherne 4" Muni-Ball Plug (part #262-048) is a pneumatic bypass plug for 4" sewer and drain pipe — the most common residential sewer line size. The 3/4" tank valve...
$ 188.02
Cherne ® 4-6" Multi-Size Underground Muni-Ball ® Plug 3/4" Bypass
The Cherne 4"-6" Multi-Size Underground Muni-Ball (part #265-048) is a pneumatic bypass plug covering 4" through 6" underground sewer and storm pipe in a single plug. Rated for 17 PSI...
$ 261.50
Cherne ® 12 pulgadas Enchufe Muni-Ball ®, derivación de 3 pulg.
The Cherne 12" Muni-Ball Plug (part #262-129) is a pneumatic bypass plug for 12" municipal sewer pipe with 3" NPT female bypass. Rated for 13 PSI / 30 ft. head...
$ 532.34
Enchufe Cherne 6" Muni-Ball, 1-1/2" Bypass
The Cherne 6" Muni-Ball Plug (part #262-064) is a pneumatic bypass plug for 6" sewer and drain pipe with a 1-1/2" threaded aluminum bypass nipple for high-flow bypass during testing....
$ 234.75
Cherne ® MUNI-BALL, 6-8 IN.
The Cherne 6"-8" Multi-Size Underground Muni-Ball (part #265-068) is a pneumatic bypass plug covering 6" through 8" underground sewer and storm pipe. Rated for 17 PSI / 40 ft. head...
$ 364.23
Tapón Cherne 2" Muni-Ball, 1/8" Bypass
The Cherne 2" Muni-Ball Plug (part #262-010) is a pneumatic bypass plug for 2" plumbing pipe with 1/8" NPT female bypass for controlled flow during testing. Rated for 22 PSI...
$ 184.18
Cherne ® I-Series Muni-Ball ® Enchufe 12-24 in c/ 3 de derivación
The Cherne I-Series Muni-Ball 12"-24" with 3" Bypass (part #312-248) is the largest standard I-Series bypass plug — a 37.0 lb premium pneumatic plug covering 12" through 24" sewer and...
$ 1,757.12
Cherne ® 10 pulgadas Enchufe Muni-Ball ®, derivación de 3 pulg.
The Cherne 10" Muni-Ball Plug (part #262-110) is a pneumatic bypass plug for 10" municipal sewer pipe with 3" NPT female bypass. Rated for 13 PSI / 30 ft. head...
$ 378.91
Cherne ® I-Series Muni-Ball ® Enchufe 6-12 in c/ 1 de derivación
The Cherne I-Series Muni-Ball 6"-12" with 1" Bypass (part #311-128) is a premium multi-size pneumatic bypass plug for 6" through 12" sewer pipe. The 1" bypass provides controlled flow during...
$ 747.14
Cherne 15"-16" Muni Ball Plug, 3" Bypass
The Cherne 15"-16" Muni-Ball Plug (part #262-137) is the largest single-size Muni-Ball — a 36.5 lb pneumatic bypass plug for 15" to 16" municipal sewer pipe. 3" NPT female bypass...
$ 840.53
Cherne ® 8-10" Multi-Size Underground Muni-Ball ® Plug 2" Bypass
The Cherne 8"-10" Multi-Size Underground Muni-Ball (part #265-078) is a pneumatic bypass plug covering 8" through 10" underground sewer and storm pipe. Rated for 17 PSI / 40 ft. head...
$ 478.97Repair Work Without Shutting Down the Line
Active sewer lines don’t stop flowing because you need to make a repair. A bypass plug seals the pipe at the work zone while routing flow through an internal channel to a temporary line downstream. Your crew works in a dry area; the sewer keeps running.
Sizing the Bypass Channel
This is the decision that matters most. The bypass channel diameter determines how much flow can pass through while the plug is set:
- 3/4” bypass — Low-flow residential laterals. Single homes, small-diameter service connections.
- 1” to 1-1/2” bypass — Residential mains and light commercial lines.
- 2” to 3” bypass — Municipal trunk lines, multi-family feeds, and higher-volume applications.
When in doubt, size up. An oversized bypass won’t cause problems, but an undersized one risks sewage backup behind the plug.
Blocking vs. Bypass — Quick Reference
Use a blocking plug when the line can be fully isolated (pressure testing, smoke testing, new construction). Use a bypass plug when flow must continue during the work (repair, replacement, spot lining).
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How do I choose the right bypass size?
Match the bypass diameter to your expected flow rate. 3/4” for single residential laterals, 1”–1.5” for residential mains, 2”–3” for municipal trunk lines. Size up if unsure — excess bypass capacity won’t hurt, but insufficient capacity causes backup.
Can I use a bypass plug for pressure testing?
No. Bypass plugs have an open channel by design — they can’t hold pressure. For pressure testing, use a blocking plug (Test-Ball) that creates a complete seal.
