The Cherne 3" Iron Grip Bypass Plug (part #268-038) is a cast iron mechanical test plug with 1/2" NPT bypass for 3" sewer and drain pipe testing. Rated for 11 PSI / 25 ft. head pressure. Fits 3" pipe (usage range 2.82"–3.12" ID). The 2.3 lb cast iron body at 12.75" long provides a robust, corrosion-resistant seal with natural rubber O-ring. Large wing nut design for easy, tool-free operation.

Key Features

Cast iron construction — heavy-duty durability for repeated field use
1/2" NPT threaded bypass — controlled flow-through during testing
11 PSI / 25 ft. head pressure — rated for low-pressure water and air tests
Natural rubber O-ring — seals round and out-of-round pipes
Large wing nut design — easy, tool-free installation and superior sealing

Technical Specifications

Cherne Part Number	268-038
Nominal Pipe Size	3"
Usage Range (Pipe ID)	2.82–3.12"
Bypass Size	1/2" NPT
Max Back Pressure	11 PSI
Max Head Pressure	25 ft.
Body Material	Cast iron
Seal	Natural rubber O-ring
Hardware	Large wing nut (tool-free)
Body Length	12.75"
Weight	2.3 lbs
Pipe Compatibility	Round and out-of-round sewer and drain pipe

Applications

Low-pressure water and air testing on 3" sewer lines, bypass plugging during repairs, temporary pipe blocking with controlled flow-through, and residential drain testing. The cast iron construction is ideal for repeated use in rough field conditions.

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 de derivación Cherne de 3" con agarre de hierro, 11 PSI, ½" de derivación