The Cherne I-Series Muni-Ball 12"-18" with 3" Bypass (part #214-188) is a premium multi-size pneumatic bypass plug for 12" through 18" sewer pipe. The 3" bypass provides maximum flow-through for large-diameter trunk main testing. Rated for 15 PSI at 45 PSI inflation. Premium natural rubber bonded to aluminum end plates with 3/4" eyebolts and field-replaceable pressure relief valve.

Key Features

I-Series premium construction — natural rubber bonded to aluminum end plates
3" 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

Technical Specifications

Cherne Part Number	214-188
Pipe Size Range	12"-18"
Bypass Size	3"
Max Back Pressure	15 PSI
Inflation Pressure	45 PSI
Body Material	Natural rubber, aluminum end plates

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 — same-day shipping on in-stock items, tax-exempt purchasing for qualified accounts.

Enchufe Cherne® I-Series Muni-Ball® de 12-18 pulgadas con 3 de derivación