The Cherne 3" End-of-Pipe Gripper (part #270-237) is a mechanical test plug for 3" DWV and sewer pipe testing. It seats flush at the pipe opening and won’t fall in — rated for 17 PSI / 40 ft. head pressure. Fits 3" Schedule 40 and Schedule 80 PVC, ABS, and cast iron pipe (usage range 2.80"–3.10" ID). At 0.40 lb, it’s a practical field tool for residential and light commercial plumbing inspections. Glass-reinforced ABS body with natural rubber O-ring — mechanical wing nut expansion, no inflation or gauge required.

Key Features

End-of-pipe design — seats at the pipe end and cannot fall in during testing
17 PSI / 40 ft. head pressure — meets code requirements for DWV and sewer air tests
Mechanical wing nut expansion — no inflation needed, no gauge to carry
Natural rubber O-ring — seals round and out-of-round pipes with excellent memory
Zinc-plated hardware — carriage bolt and extra-large wing nut resist rust and corrosion

Technical Specifications

Cherne Part Number	270-237
Nominal Pipe Size	3"
Usage Range (Pipe ID)	2.80–3.10"
Max Back Pressure	17 PSI
Max Head Pressure	40 ft.
Body Material	Glass-reinforced ABS plastic
Seal	Natural rubber O-ring
Hardware	Zinc-plated carriage bolt, extra-large zinc wing nut
Operating Temperature	0°F to 125°F
Weight	0.40 lb
Pipe Compatibility	Schedule 40 & 80 PVC, ABS, cast iron (no-hub, service weight, extra-heavy)

Applications

DWV pressure testing on 3" drain lines, stack testing, residential and commercial plumbing inspections, and temporary pipe blockage during renovation or repair. Choose the End-of-Pipe model over the Inside-of-Pipe when you only need to seal at the pipe opening.

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.

Tapón Cherne® Gripper® de 3" para final de tubería, 17 PSI - 40 pies.