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 for high-volume flow. Rated for 13 PSI / 30 ft. head pressure at 35 PSI inflation. Natural rubber inflates to seal pipes from 14.00" to 16.00" ID. At 19.75" deflated length and 13.75" diameter, plan for two-person handling and manhole deployment.

Key Features

• 3" NPT F bypass — controlled flow-through during sewer and drain testing
• 13 PSI / 30 ft. head pressure — rated for sewer air and DWV testing
• Pneumatic inflation at 35 PSI — natural rubber seals round and out-of-round pipe
• Tether-bar compatible — holds to full head pressure with tether bar
• Natural rubber — durable construction for sewer environments

Technical Specifications

Applications

Sewer air pressure testing with controlled bypass flow, DWV code compliance testing, municipal sewer main isolation, storm drain testing, and pipe repair work requiring temporary flow control. The bypass allows water to pass through the plug during testing rather than building up behind it. 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.