Sioux Chief 884-ATM 3" Hub ABS...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.80
Sioux Chief 884-ATM 3" Hub ABS Closet Flange with Stainless Steel Swivel Ring

Sioux Chief 884-ATM 3" Hub ABS Closet Flange with Stainless Steel Swivel Ring

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Model: 884-ATM

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

$8.80
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Sioux Chief 884-ATM 3" Hub ABS Closet Flange with Stainless Steel Swivel Ring

The Sioux Chief 884-ATM is a one-piece ABS closet flange built for 3" hub DWV connections, featuring a corrosion-resistant 430 stainless steel swivel ring sized for 4" rough-in alignment. Designed for behind-the-wall rough-in work, this flange includes a test knockout (TKO) that allows the drain line to be pressure-tested before the toilet is set, then removed cleanly without breaking apart or falling down the pipe. The one-piece ABS body simplifies installation for plumbers working on new construction or remodel rough-in, while the stainless swivel ring lets the flange rotate to true up bolt-slot orientation after the pipe is set in the slab or subfloor. This design is covered under Patent #5,377,361.

Key Features

  • Trade Size: 3" hub connection with a 4" stainless steel swivel ring for closet bolt alignment.
  • Durable Construction: One-piece ABS/PVC body paired with a corrosion-resistant 430 stainless steel swivel ring for long-term durability at the floor connection.
  • Test Knockout (TKO): Integrated knockout will not break apart or fall down the drain pipe during testing, keeping the line clear and protected during rough-in inspection.
  • Swivel Ring Design: The stainless steel ring rotates independently of the flange body, letting installers correct bolt-slot orientation after the hub is set without reworking the pipe.
  • Patented Design: Manufactured under Patent #5,377,361, reflecting an engineered approach to the knockout-and-swivel assembly.

Technical Specifications

  • Country of Origin: United States
  • Packaging: 24 EA per case
  • Material: ABS body with 430 stainless steel swivel ring
  • Connection: 3" hub, 4" swivel ring
  • Feature: Test knockout (TKO)

Typical Applications

  • Residential and Commercial Rough-In Plumbing
  • Toilet Drain Line Connections to 3" ABS/PVC Hub Piping
  • Drain-Waste-Vent (DWV) Pressure Testing Before Fixture Installation
  • New Construction and Remodel Closet Flange Replacement

Why Sioux Chief?

Sioux Chief engineers its 884-ATM closet flange with a one-piece ABS body and a corrosion-resistant 430 stainless steel swivel ring, giving installers a durable connection point that holds up behind the wall and under the floor. The patented knockout design (Patent #5,377,361) keeps debris out of the drain line during pressure testing, helping plumbers move from rough-in to fixture-set with fewer callbacks. Made in the United States and packaged 24 per case for distributors and contractors stocking rough-in supply.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Closet Flange
Configuration:
Test Knockout
Product Finish:
Stainless Steel Swivel Ring
Country of Origin:
United States
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Drains and Cleanouts
Product Material:
ABS
Product Size:
3" x 4"

Sioux Chief 884-ATM – Frequently Asked Questions

1) Will the Sioux Chief 884-ATM closet flange fit 3 inch ABS drain pipe?
Yes. The 884-ATM is a 3 inch hub flange, so the pipe slips up inside the hub and is solvent welded. It is an ABS body, so it is cemented with ABS cement to ABS pipe. The ring side is 4 inch, giving you the standard 4 inch closet bolt spread at the floor while the drain line stays 3 inch.
2) What does the test knockout on this closet flange actually do during rough-in?
The TKO lets you pressure test the toilet drain line before the fixture is set. The knockout seals the flange opening for the test, then is removed when you are ready to set the bowl. Sioux Chief's design keeps it from breaking apart or dropping down into the pipe, so you are not fishing pieces out of the drain after the inspection.
3) Can I rotate the bolt slots after the drain pipe is already glued in the slab?
Yes, that is what the swivel ring is for. The 430 stainless ring turns independently of the ABS flange body, so once the 3 inch hub is cemented to the pipe you can spin the ring to line the closet bolt slots up square with the wall. No cutting or reworking the pipe to fix orientation.
4) Can I use this ABS flange on PVC drain pipe?
The 884-ATM body is ABS, and ABS and PVC are different plastics that do not solvent weld reliably to each other. Glue it to ABS pipe with ABS cement. If your riser is PVC DWV, order the PVC version of the flange rather than trying to transition at the hub.
5) Should I use a 3 inch hub closet flange or a 4 inch one?
Match the hub to the pipe you are landing on, not to the toilet. The 884-ATM is the one to use when the closet bend and riser are 3 inch ABS, which is the common residential toilet branch. If your rough-in riser is 4 inch pipe, a 3 inch hub will not accept it and you need a 4 inch hub flange instead. Either way the bolt pattern at the floor is the same, because this flange carries a 4 inch ring.
6) Is a metal closet flange ring better than all-plastic for a commercial restroom?
The ring is where flanges fail, since that is what the closet bolts pull against. The 884-ATM pairs an ABS body with a 430 stainless steel ring, which resists corrosion better than a plated steel ring and does not deform like an all-plastic slot does under repeated bolt tightening. For institutional or multi-family work where toilets get pulled and reset, that stainless ring is the reason to pick this one.
7) Does the 884-ATM come with closet bolts or a wax ring?
No. What you get is the ABS flange body with the stainless steel swivel ring and the integrated test knockout. Closet bolts, the wax or foam seal, and the floor fasteners are ordered separately, along with ABS solvent cement for the hub joint.
8) Is the Sioux Chief 884-ATM one piece or does it need assembly?
One piece. The ABS hub and flange are a single molded body with the stainless ring fitted on, so there is nothing to glue together on the bench. You cement the hub to the pipe, set it, and align the ring. Sioux Chief builds the knockout and swivel assembly under Patent #5,377,361.
9) How does the 884-ATM closet flange ship for stocking?
It is packaged 24 each per case, which is how distributors and contractors stock rough-in flanges. It is also made in the United States, which matters on public and federally funded work where domestic sourcing is a condition of the job.
How fast can I get the Sioux Chief 884-ATM 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 884-ATM come with a warranty?
Absolutely. The Sioux Chief 884-ATM 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 884-ATM?
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 884-ATM from ZenSupply?
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