OATEY 212128 Cherne® I-Series ...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,100.00
$1,050.00
OATEY 212128 Cherne® I-Series Muni-Ball® Plug 8-12 In W/ 2 in Bypass

OATEY 212128 Cherne® I-Series Muni-Ball® Plug 8-12 In W/ 2 in Bypass

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Model: 212128
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,100.00
$1,050.00
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Cherne® I-Series Muni-Ball® Plug 8-12 In W/ 2 in Bypass

  • Features

    • Pressure relief valve on 15-32 in. and larger protects plugs from over inflation
    • 48-72 in. & 54-96 in. plugs fit through a 36 in. opening
    • Flexible bypass hoses
    • All plugs through 24-60 in. easily fit through a 24 in. manhole frame
    • 3/4 in. eyebolts on 15-32 in. and larger plugs
    • Superior expansion range
    • Full body cording for added durability
    • Small deflated diameters
    • Aluminum end plates minimize rust

Manufacturer Resources

Product Specs

Bypass Diameter:
2 in. M
Chain Eye Bolts:
0.25 in. Eyenut
Deflated Diameter:
6.85 in.
Deflated Length:
18.5 in. (470 mm)
Inflation Pressure:
45 psi (3 bar)
Inflation Thread:
1/4 in.
Maximum Back Pressure:
15 psi (1 bar)
Volume:
0.59
Department:
Plumbing
Product Group:
Plumbing Testing
Product Subgroup:
Testing Products
Product Type:
Test Plug
Product Finish:
Black
Product Weight:
14
Product Nominal Size:
8 in. - 12 in. (200 - 300 mm)

OATEY 212128 – Frequently Asked Questions

1) What pipe sizes does the Cherne Muni-Ball 212128 test plug fit?
The Cherne I-Series Muni-Ball plug, model 212128, covers 8 in. to 12 in. nominal pipe (200 to 300 mm). One plug handles the whole range, so a crew testing a line that steps from 8 to 12 inch doesn't need a second size.
2) What inflation pressure should I run on a Cherne 8-12 inch Muni-Ball plug?
Inflate to 45 psi (3 bar). That is the rated inflation pressure for the 8-12 in. Muni-Ball, and it is not a figure to exceed by feel: use a regulated gauge on the inflation line and stop there.
3) Does the Cherne 212128 have a bypass, and what size is it?
Yes, it carries a 2 in. male bypass. That lets flow continue through the plugged line, or lets you run a fill or drain hose while the plug stays inflated, which is the difference between this and a solid blocking plug.
4) What fitting do I need on my air hose to inflate this Muni-Ball plug?
The inflation port is 1/4 in. thread, so a standard 1/4 in. inflation hose or air line with a gauge threads straight on. Nothing larger is required.
5) Does the 8-12 inch Muni-Ball have a pressure relief valve?
No. On the I-Series Muni-Ball line, pressure relief valves are fitted to the 15-32 in. and larger plugs. The 8-12 in. plug does not have one, so control inflation with a regulator and gauge at 45 psi rather than relying on the plug to vent itself.
6) How much air does it take to inflate a Cherne 212128 plug?
Inflated volume is 0.59 cubic feet, which tells you what compressor or air tank capacity you need on site. A small portable tank will fill it; sizing matters more when you are setting several plugs on one run.
7) Is the Cherne Muni-Ball built for repeated municipal sewer testing, not one-time use?
It is a reusable inflatable test plug with full body cording for durability and aluminum end plates to minimize rust, which is why it holds up in wet sewer and storm line work rather than being a disposable plug. Finish is black.
How fast can I get the OATEY 212128 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 212128 come with a warranty?
Absolutely. The OATEY 212128 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 212128?
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 212128 from ZenSupply?
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