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Cherne® 3-1/2" Clean-Out Gripper® Plug
Features
- Natural rubber threaded O-ring for a positive seal
- Made with glass-reinforced ABS plastic
- Guaranteed to seal most damaged threads
- NPT-sized, including hard-to-find 3-1/2 in.
- Black color blends well with cast-iron pipe
Manufacturer Resources
Product Specs
- Maximum Back Pressure:
- 17 psi/40 ft.
- Volume:
- 0.026
- Department:
- Plumbing
- Product Group:
- Plumbing Testing
- Product Subgroup:
- Testing Products
- Product Type:
- Test Plug
- Product Finish:
- Black
- Product Material:
- Metal
- Product Weight:
- 0.5
- Product Nominal Size:
- 3.5 in. (87.5 mm)
OATEY 270138 – Frequently Asked Questions
1) Will the Cherne 3-1/2 inch Clean-Out Gripper plug thread into a damaged or corroded cast iron cleanout?
That is what it's built for. The Gripper plug seals with a natural rubber threaded O-ring rather than metal-to-metal thread contact, so it will seal most damaged threads in an old cleanout hub. The black finish also blends with cast iron, so it doesn't stand out on an exposed cleanout.
2) How much head pressure can the Cherne Gripper cleanout plug hold during a DWV test?
Rated to 17 psi, equal to 40 feet of water column. That covers a typical multi-story stack test, but if your test head exceeds 40 feet you need to break the column into stages or use a plug rated higher.
3) Is this a temporary test plug or can it stay in the cleanout permanently?
The Cherne Gripper is a clean-out plug, not just a test plug, and the glass-reinforced ABS body with a rubber O-ring seal is intended to stay in the fitting as the working closure. Unlike a brass plug it won't seize into a cast iron hub, so it comes back out when the line needs rodding.
4) Gripper plug or an inflatable test ball for plugging a 3-1/2 inch cleanout?
Two different jobs. A mechanical Gripper plug threads into the cleanout's NPT tapping and stays there as the permanent closure, rated to 17 psi back pressure. An inflatable ball seats inside the pipe bore, not the threads, and comes out after the test. If you're closing a threaded cleanout opening, the threaded Gripper is the right part.
5) Will a plastic cleanout plug hold up in a commercial building versus a brass one?
The body is glass-reinforced ABS, which is stiffer than plain ABS and resists the cross-threading and crushing that kills lightweight plugs. It also won't corrode or lock into a cast iron hub the way brass does, which is the usual reason a maintenance crew ends up chiseling a cleanout plug out. Back pressure rating is 17 psi.
6) What is the Oatey 270138 part number and how heavy is it?
Order it as Oatey/Cherne 270138. It weighs 0.5 lb and has a shipping volume of 0.026, so it's a one-hand item a service tech can carry several of on the truck.
How fast can I get the OATEY 270138 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 270138 come with a warranty?
Absolutely. The OATEY 270138 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 270138?
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 270138 from ZenSupply?
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