Sioux Chief 886-4PT TKO Flush-...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$5.63
Sioux Chief 886-4PT TKO Flush-to-Floor Closet Flange with Stainless Steel Ring, 4" PVC Hub

Sioux Chief 886-4PT TKO Flush-to-Floor Closet Flange with Stainless Steel Ring, 4" PVC Hub

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Model: 886-4PT

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

$5.63
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Sioux Chief 886-4PT TKO Flush-to-Floor Closet Flange with Stainless Steel Ring, 4" PVC Hub

The Sioux Chief 886-4PT is a TKO (total knockout) closet flange built for flush-to-floor drainage installations where a 4" PVC spigot connection is required. The flange features a full-swivel, corrosion-resistant 430 stainless steel ring with holes for securing to the floor and slots for inserting closet bolts, plus a one-piece knockout sized larger than the drain opening so it cannot break apart or fall down the drain line during rough-in. The 4" Schedule 40 PVC spigot connection conforms to ASTM D2665, and the flange holds a standard head test and is UPC listed, making it a reliable choice for professional drainage system installations behind the wall or under the floor.

Key Features

  • Trade Size: 4" hub connection for closet flange installation in drainage systems.
  • Durable Construction: PVC flange body paired with a corrosion-resistant 430 stainless steel swivel ring engineered for maximum strength.
  • Socket Connection: 4" Schedule 40 spigot connection conforming to ASTM D2665 (PVC) for secure solvent-weld joining to drain piping.
  • One-Piece Total Knockout: Knockout is sized larger than the opening and comes out in one piece, preventing it from falling down the drain line during installation.
  • Full-Swivel Ring: Stainless steel ring swivels freely and includes holes for floor fastening and slots for closet bolts.
  • Head Test Rated: Holds a standard head test equal to five floors (22 PSI), confirming joint integrity under drainage system pressure.
  • Design Patent: Covered under U.S. Patent #5,377,361 for proven performance and improved design over standard flanges.

Certifications & Compliance

  • UPC Listed
  • Conforms to ASTM D2665 for PVC drain, waste and vent pipe fittings
  • Holds standard head test (5 floors / 22 PSI)

Technical Specifications

  • connector_type: Flange
  • material: Stainless Steel
  • Material: PVC
  • Connection Type: Socket
  • Size: 4"
  • Packaging: 1 EA
  • Country of Origin: United States

Typical Applications

  • Flush-to-Floor Toilet Rough-In Installations
  • Residential and Commercial Drainage Systems
  • New Construction Bathroom Plumbing
  • Renovation and Replacement Closet Flange Work
  • PVC Drain, Waste and Vent (DWV) Piping Systems

Why Sioux Chief?

Sioux Chief engineers the 886 series TKO closet flange with a patented one-piece knockout design and a corrosion-resistant stainless steel swivel ring built for long-term reliability in drainage systems. Backed by UPC listing and a standard head test rating, this flange gives plumbers and contractors a dependable, code-recognized connection for flush-to-floor closet installations on 4" PVC drain lines.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Closet Flange
Connection Type:
Socket
Product Finish:
Stainless Steel
Listing:
UPC Listed
Standards:
ASTM D2665
Country of Origin:
United States
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Drains and Cleanouts
Product Material:
PVC
Product Size:
4"

Sioux Chief 886-4PT – Frequently Asked Questions

1) Will the Sioux Chief 886-4PT closet flange connect to 4 inch Schedule 40 PVC DWV pipe?
Yes. The 886-4PT has a 4 inch Schedule 40 PVC spigot/socket connection conforming to ASTM D2665, so it solvent-welds directly to 4 inch PVC drain, waste and vent pipe. It will not join to cast iron or ABS lines without a transition fitting.
2) Does the 886-4PT flange have a swivel ring, and can I rotate it to line up closet bolts?
Yes. The ring is 430 stainless steel and full-swivel, so after the flange is solvent-welded you can turn the ring to align the bolt slots with the toilet. It also carries holes for screwing the ring down to the floor, plus the slots for the closet bolts themselves.
3) Is the Sioux Chief 886-4PT code approved for commercial plumbing work?
The flange is UPC listed and its PVC spigot connection conforms to ASTM D2665 for DWV fittings. It also holds a standard head test equal to five floors, 22 PSI. Those are the listings inspectors look for on a closet flange in residential or commercial drainage systems.
4) What does flush-to-floor mean on the 886-4PT, and is it right for a slab toilet rough-in?
Flush-to-floor means the flange body sets level with the finished floor rather than standing above it, which is how most slab and new-construction toilet rough-ins are built. The 886-4PT is intended for that installation on a 4 inch PVC drain line. If your existing pipe stub sits below a thick finished floor and you need to build height, a flush-to-floor flange is the wrong choice for that opening.
5) Why does the one-piece TKO knockout matter during rough-in?
On the 886 TKO flange the knockout is sized larger than the drain opening and releases in one piece, so it cannot break apart or drop down the drain line while you are setting the closet. That is the practical difference from flanges with a scored plug that fragments, where the pieces end up in the waste line and have to be fished out.
6) Do closet bolts and floor screws come with the 886-4PT flange?
The flange is supplied as the PVC body with the stainless swivel ring; the ring is drilled for floor fasteners and slotted for closet bolts, but plan on supplying the bolts, screws and a wax or foam seal separately to finish the set.
7) Will a stainless ring flange hold up better than an all-plastic one in a wet bathroom?
The 886-4PT pairs a PVC body with a 430 stainless steel ring, which is corrosion resistant where the closet bolts and floor screws take load. That is the usual reason facility and multi-family buyers specify a metal-ring flange over a plain plastic ring, which tends to be the part that cracks when a rocking toilet is retightened.
8) How is the Sioux Chief 886-4PT packaged, and is it made in the USA?
It ships one each, and the flange is made in the United States. The orderable part number is 886-4PT in the 4 inch size.
How fast can I get the Sioux Chief 886-4PT 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 886-4PT come with a warranty?
Absolutely. The Sioux Chief 886-4PT 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 886-4PT?
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 886-4PT from ZenSupply?
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