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

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.