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Cherne® 3in.- 4in. MS2® Plug
Features
- Nylon strap and safety handle prevents plug from sliding down a line
- Multi-stage deflation eliminates backsplash
- Includes 5' extension hose
- Pressure relief valve to safeguard against over-inflation
- Designed for waste stack testing from floor drain to sewer pipe
- Long enough to seal wye vertical riser and sewer run
Manufacturer Resources
Product Specs
- Chain Eye Bolts:
- Strap and Handle
- Deflated Diameter:
- 2.38 in. (60 mm)
- Deflated Length:
- 23.75 in.
- Inflation Pressure:
- 40 psi (2,8 bar)
- Inflation Thread:
- tank valve
- Maximum Back Pressure:
- 13 psi (0,9 bar)/30 ft. (9.1 M)
- Volume:
- 0.246
- Department:
- Plumbing
- Product Group:
- Plumbing Testing
- Product Subgroup:
- Testing Products
- Product Type:
- Test Plug
- Product Finish:
- Black
- Product Weight:
- 3
- Product Nominal Size:
- 3 in. - 4 in. (75 - 100 mm)
OATEY 274526 – Frequently Asked Questions
1) What pipe sizes does the Cherne MS2 274526 test plug fit?
The Cherne MS2 plug, model 274526, is sized for 3 in. to 4 in. (75 to 100 mm) nominal pipe. Deflated it measures 2.38 in. (60 mm) across, so it slides into a 3 inch line easily, and it inflates to seal either size.
2) How much head of water can the MS2 plug hold back during a waste stack test?
Maximum back pressure on the Cherne MS2 is 13 psi (0,9 bar), which equates to a 30 ft. (9.1 M) column of water. If your stack test calls for more head than that, you need a higher rated plug.
3) What pressure do you inflate the Cherne MS2 plug to, and what fitting does it use?
Inflate to 40 psi (2,8 bar). The inflation connection is a standard tank valve, so a regular air chuck or bicycle-style pump head works. A pressure relief valve is built in to guard against over-inflation, and a 5 ft extension hose comes with it so you can inflate from outside the opening.
4) Why is this test plug so long compared with a standard ball plug?
Deflated length is 23.75 in. That length is deliberate: the MS2 is long enough to seal across a wye vertical riser and into the sewer run at the same time, which a short ball-style plug cannot do. It is intended for waste stack testing from the floor drain down to the sewer pipe.
5) What keeps the plug from sliding down the line once the stack is filled?
A nylon strap and safety handle are fitted in place of chain eye bolts. You anchor the strap at the opening so the plug cannot travel down the pipe under head pressure, and the handle gives you something to pull on when retrieving it.
6) Does this plug deflate without blowing water back at you?
Multi-stage deflation is built into the MS2, which bleeds the plug down in steps so the test water releases without backsplash. Combined with the 5 ft extension hose, you can stand clear of the opening while it lets go.
7) Is the Cherne MS2 a one-size plug or do I need to order a size?
One part covers the range. Ordering is a single model, 274526, covering 3 in. to 4 in. pipe in black, weighing 3 lb. No separate size or finish selection to make.
How fast can I get the OATEY 274526 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 274526 come with a warranty?
Absolutely. The OATEY 274526 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 274526?
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
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