OATEY 265078 Cherne® 8 in.- 10...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$664.29
$614.29
OATEY 265078 Cherne® 8 in.- 10 in. Muni-Ball® Plug 2 in. Bypass

OATEY 265078 Cherne® 8 in.- 10 in. Muni-Ball® Plug 2 in. Bypass

(No reviews yet) Write a Review

Model: 265078
Selected Model is

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

$664.29
$614.29
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like
Cherne® 8 in.- 10 in. Muni-Ball® Plug 2 in. Bypass

  • Features

    • Seals both round and out-of-round pipe
    • Removable inflation valve can be replaced if damaged or replaced with quick disconnect fitting
    • Use to block flow or as a back plug for sewer air testing
    • Made of natural rubber for excellent expansion and memory
    • One plug fits multiple pipe diameters.

Manufacturer Resources

Product Specs

Bypass Diameter:
2 in. F
Chain Eye Bolts:
3/8 in. (1)
Deflated Diameter:
6.75 in. (171 mm)
Deflated Length:
14.5 in. (368 mm)
Inflation Pressure:
30 psi (2,1 bar)
Inflation Thread:
1/4 in.
Maximum Back Pressure:
17 psi (1,2 bar)/40 ft (12 M)
Volume:
0.493
Department:
Plumbing
Product Group:
Plumbing Testing
Product Subgroup:
Testing Products
Product Type:
Test Plug
Product Finish:
Black
Product Weight:
9.5
Product Nominal Size:
8 in. - 10 in. (200 - 250 mm)

OATEY 265078 – Frequently Asked Questions

1) What pipe sizes does the Cherne Muni-Ball 265078 plug fit?
The Cherne Muni-Ball 265078 covers 8 in. through 10 in. pipe (200 to 250 mm), so one plug handles both diameters. Deflated it measures 6.75 in. (171 mm) diameter by 14.5 in. (368 mm) long, which is what you need to clear for insertion through a manhole or cleanout opening.
2) How much head of water can this 8-10 in. Muni-Ball plug hold back?
Rated for 17 psi (1,2 bar) maximum back pressure, which equates to 40 ft (12 M) of head. Exceed that and the plug can blow out, so stage or relieve flow upstream if your test head is taller than 40 feet.
3) What inflation pressure should I run on the Cherne 265078 and what fitting does the valve take?
Inflate to 30 psi (2,1 bar). The inflation valve is a 1/4 in. thread, and it is removable, so it can be swapped out if damaged or changed over to a quick disconnect fitting.
4) What is the 2 in. bypass on this Muni-Ball plug used for?
The bypass is a 2 in. female port running through the plug. It lets you pass flow through the blocked line while the plug is seated, hook up a pump or hose, or run a line for air testing instead of dead-ending the pipe. If you only need a hard block with no flow-through, a plain Muni-Ball without a bypass is the simpler choice.
5) Will this plug seal a sewer line that is out of round or has an egg-shaped section?
Yes. The Muni-Ball is natural rubber and seals both round and out-of-round pipe, which is the usual reason a rigid mechanical plug fails in old clay or deformed sewer line. The rubber's expansion and memory let it conform to the bore and return to shape after deflation.
6) How do I retrieve the Cherne 265078 plug from the line once it is set?
It has one 3/8 in. chain eye bolt for tying off a retrieval rope or chain. At 9.5 pounds it is a one-man lift, but always tether it before inserting, since a 17 psi back pressure release can push an untethered plug down the line.
7) Can I use this plug as a back plug for a low-pressure sewer air test?
That is one of its stated uses. Set it as the back plug, inflate to 30 psi, and run your air line through the 2 in. female bypass. It can also simply block flow for a line repair or bypass pumping setup.
8) How much air does it take to inflate the 8-10 in. Muni-Ball?
Volume is 0.493, so a small portable compressor or air tank handles it. Run a regulator and gauge on the 1/4 in. inflation thread and stop at 30 psi, since over-inflating in an undersized pipe is the fastest way to ruin the plug.
9) What is the Oatey Cherne part number to order for an 8 to 10 inch bypass plug?
Order Oatey 265078. That is the Cherne Muni-Ball 8 in. to 10 in. plug with the 2 in. bypass, in black natural rubber, single plug.
How fast can I get the OATEY 265078 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 265078 come with a warranty?
Absolutely. The OATEY 265078 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 265078?
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 265078 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!