The Cherne 6"-10" Big-Mouth Plug with 4" Bypass (part #374-068) is a pneumatic bypass plug with an oversized opening for high-volume flow-through during sewer testing. Covers 6" through 10" pipe. The 4" bypass provides significantly more flow capacity than standard Muni-Ball bypass sizes. Natural rubber construction for underground sewer and storm pipe applications.

Key Features

4" bypass — controlled flow-through during testing
Pneumatic inflation — natural rubber seals round and out-of-round pipe

Technical Specifications

Cherne Part Number	374-068
Pipe Size Range	6"-10"
Bypass Size	4"
Body Material	Natural rubber

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.

Cherne® Plug, 6-10 IN. Big-Mouth, W/4 IN. Bypass