The Cherne 12" T-Handle Gripper with Bypass (part #272-973) is a heavy-duty aluminum mechanical test plug with 3/4" NPT male bypass for 12" underground sewer and storm pipe. Rated for 10 PSI / 23 ft. head pressure. Fits 12" concrete, clay, SDR 26, and SDR 35 pipe (usage range 11.7"–12.3" ID). The 16 lb aluminum construction and neoprene O-ring are designed for long-term underground service. Zinc-plated steel T-handle for high-torque expansion.

Key Features

• T-handle mechanical expansion — high-torque sealing for concrete, clay, and SDR pipe
• 3/4" NPT M threaded bypass — controlled flow during testing without full shutoff
• 10 PSI / 23 ft. head pressure — rated for sewer air pressure tests
• Chemical-resistant neoprene O-ring — handles sewer gas and chemical exposure
• Heavy-duty aluminum body — corrosion-resistant and lighter than cast iron

Technical Specifications

Aplicaciones

Municipal sewer testing on 12" mains, storm sewer isolation and flow control, bypass plugging during large-diameter line repairs, and construction acceptance testing. The 12" is the largest size that accepts SDR 26 and SDR 35 pipe — 15" and 18" models are limited to concrete and clay.

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.