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Cherne® 4" Inside of Pipe Gripper® Plug
Features
- Zinc-Plated carriage bolt resists rust and corrosion
- Natural rubber O-ring for excellent expansion and memory
- Plug is rated for 17 PSI or 40 ft. of head pressure
- ABS glass-reinforced plates for added strength
- Extra large zinc wing nut for ease of tightening, no wrench required
Manufacturer Resources
Product Specs
- Maximum Back Pressure:
- 17 psi (1,2 bar)/40 ft (12 M)
- Volume:
- 0.01
- Department:
- Plumbing
- Product Group:
- Plumbing Testing
- Product Subgroup:
- Testing Products
- Product Type:
- Test Plug
- Product Finish:
- Yellow
- Product Material:
- Metal
- Product Weight:
- 0.45
- Product Nominal Size:
- 4 in. (100 mm)
OATEY 270296 – Frequently Asked Questions
1) What size pipe does the Cherne 270296 Gripper plug fit?
The Cherne 270296 Gripper plug is a 4 inch (100 mm) nominal size plug, and it seats inside the pipe rather than over the outside. That means it goes into the end of a 4 inch DWV line, cleanout, or stack opening and expands against the inside wall when you tighten the wing nut.
2) Do I need a wrench to set this Cherne Gripper plug?
No tools needed. The 270296 uses an extra large zinc wing nut you turn by hand to expand the plug, which is the practical advantage when you are reaching into a cleanout or working off a ladder.
3) Should I use an inside-of-pipe plug or an outside/mechanical pipe plug for my 4 inch test?
An inside-of-pipe Gripper plug like the 270296 expands against the inner wall, so it works on a cut pipe end, a cleanout, or a stub where there is no hub or external shoulder to grab. Use an outside-of-pipe style plug instead when you need to cap over the end of the pipe, for example on a spigot end with damaged or out-of-round interior. If the interior of your 4 inch pipe is scored, badly out of round, or full of mortar, the O-ring will not seal well and an external plug is the better call.
4) What is the exact part number to order the Cherne 4 inch inside-of-pipe Gripper plug?
Order Oatey/Cherne part number 270296. That is the 4 inch inside-of-pipe Gripper plug, rated 17 psi. The Gripper line runs across several pipe sizes, so the number matters: 270296 is specifically the 4 inch.
5) Will this test plug rust if it sits in a wet line through a job?
The carriage bolt is zinc plated to resist rust and corrosion, and the plates are ABS glass-reinforced plastic rather than steel. The sealing element is natural rubber, chosen for expansion and memory so the plug can be reused test after test. It is still a test plug, not a permanent cap, so pull it and wipe it down after the test.
6) How heavy is the Cherne 4 inch Gripper plug, and is it something I can keep on the truck?
It weighs 0.45, so it is light enough to carry several on a service van without thinking about it. The yellow finish makes it easy to spot in a pipe end, which matters when you are closing out a test and need to confirm every plug has been pulled before backfill or startup.
How fast can I get the OATEY 270296 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the OATEY 270296 come with a warranty?
Absolutely. The OATEY 270296 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the OATEY 270296?
You can call, text, or email our expert support team for fast answers. We’re here to help with
product
selection,
installation tips, and troubleshooting. Contact Us
Why buy the OATEY 270296 from ZenSupply?
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and
rewards on
every order.
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