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Availability: Out Of Stock
Estimated delivery: June 9 – June 11
Sku: 214188

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.

We ship UPS and the tracking number will be emailed. As always, feel free to call 866-514-3684 or email sales@envirodesignproducts.com for any questions.