Sioux Chief 878-15PK 1-1/2" Po...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1.96
Sioux Chief 878-15PK 1-1/2" Polypropylene Countersunk Plug with Brass Insert, White

Sioux Chief 878-15PK 1-1/2" Polypropylene Countersunk Plug with Brass Insert, White

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Model: 878-15PK

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

$1.96
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Sioux Chief 878-15PK 1-1/2" Polypropylene Countersunk Plug with Brass Insert, White

The Sioux Chief 878-15PK is a 1-1/2" countersunk plug designed for DWV cleanout and test tee openings in behind-the-wall and under-slab rough-in work. Molded from durable white polypropylene (PP), the plug seats flush with the fitting face and carries a removable brass insert so a plumber can back it out with a standard wrench or cleanout key whenever a line needs to be tested or serviced. It's built as a straightforward, purpose-specific rough-in part rather than a decorative fixture, made to be installed once and reopened only when access is needed. Manufactured in the United States, this part ships 25 EA per case for stocking on the truck or at the supply counter.

Key Features

  • Trade Size: 1-1/2" nominal size matches standard DWV cleanout and test tee openings of this diameter, so it drops into place without additional fitting.
  • Polypropylene Construction: The PP body stands up to the moisture, waste, and chemical exposure typical of drain-waste-vent lines, making it a practical choice for a part that stays behind the wall or under the floor for the long term.
  • Countersunk Profile: The plug is designed to seat flush within the fitting rather than protrude, keeping the cleanout location low-profile once it's capped off.
  • Removable Brass Insert: A threaded brass insert is built into the plug so it can be backed out with a standard wrench or cleanout key for drain testing, camera inspection, or service work, then reinstalled to reseal the line.
  • White Finish: The polypropylene body is finished in white for a clean, consistent look in any location where the cleanout remains visible.
  • Case Packaging: Packaged 25 EA per case, suited to stocking rough-in plug inventory for multiple jobs.

Technical Specifications

  • Country of Origin: United States
  • Packaging: 25 EA per case

Typical Applications

  • DWV Cleanout Access: Capping a cleanout fitting after rough-in so the line can be reopened later for maintenance.
  • Drain Line Testing: Removable for pressure or water testing of drain-waste-vent runs before walls or floors are closed in.
  • Residential and Commercial Rough-In: Suited to new construction and remodel plumbing where a 1-1/2" test or cleanout opening is specified.
  • Camera and Snake Access: Backed out with the brass insert to allow drain camera inspection or auger access without cutting into the line.
  • New Construction and Renovation: A stocking item for plumbing contractors who need a reliable plug on hand for 1-1/2" DWV openings.

Why Sioux Chief?

Sioux Chief builds the 878-15PK in the United States from polypropylene chosen for its resistance to the moisture, waste, and chemical exposure that DWV lines see over time, and pairs it with a brass insert engineered for repeated removal and reinstallation during testing and service calls. For plumbers and contractors closing out a 1-1/2" cleanout or test opening, it's a simple, purpose-built rough-in part designed to do one job well behind the wall or under the floor, without the added cost or complexity of hardware this application doesn't need.

Product Specs

Product Type:
Plug
Country Of Origin:
United States
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Parts & Accessories
Product Material:
Polypropylene
Product Color:
White
Product Size:
1-1/2"

Sioux Chief 878-15PK – Frequently Asked Questions

1) Will the Sioux Chief 878-15PK plug fit a 1-1/2 inch DWV cleanout or test tee?
Yes. The 878-15PK is a 1-1/2 inch nominal countersunk plug made for standard DWV cleanout and test tee openings of that trade size, so it drops straight into a 1-1/2 inch opening without an adapter. If your cleanout is 2 inch or larger, this is the wrong size part.
2) Can a cleanout plug with a brass insert be removed later for camera inspection or snaking?
That is what the brass insert on the 878-15PK is for. The threaded brass insert molded into the polypropylene body lets you back the plug out with a standard wrench or cleanout key, run a camera or auger, then reinstall it to reseal the line. You are not cutting into the pipe to get access.
3) Why a countersunk plug instead of a raised-head plug for a cleanout?
A countersunk plug seats flush within the fitting face rather than standing proud of it. On the Sioux Chief 878-15PK that matters where the cleanout sits behind a wall, under a slab, or anywhere the finish has to close in tight over the fitting. If you need something to grab a wrench on from outside the wall, a raised-head plug is the better choice.
4) How does the Sioux Chief 878-15PK plug ship, and is it sold as a case?
It ships 25 EA per case, which is the packaging if you are stocking plugs on the truck or at the counter for multiple jobs rather than buying one for a single opening.
5) Can I use this plug to pressure test a drain line before closing the walls?
Yes. The 878-15PK is commonly set in a 1-1/2 inch test tee or cleanout to seal the run for water or pressure testing of DWV piping, then backed out at the brass insert once the test passes. After that it goes back in as the permanent cleanout plug, so the same part serves both the test and the finished install.
6) Is polypropylene a good material for a plug that stays under a slab or behind a wall?
Polypropylene holds up to the moisture, waste, and chemical exposure DWV lines see, which is why the 878-15PK body is molded from PP rather than a metal that can corrode in place. It is intended to be installed once and reopened only when access is needed, so the body itself does not become the failure point years later. The only metal in it is the brass insert that takes the wrench.
7) Is the Sioux Chief 878-15PK made in the USA, and what color is it?
The 878-15PK is manufactured in the United States and the polypropylene body is white, which keeps it consistent with other white DWV rough-in parts where the cleanout stays visible. Country of origin matters on public and institutional jobs with domestic-sourcing language in the spec.
How fast can I get the Sioux Chief 878-15PK 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 Sioux Chief 878-15PK come with a warranty?
Absolutely. The Sioux Chief 878-15PK 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 Sioux Chief 878-15PK?
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 Sioux Chief 878-15PK from ZenSupply?
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