Sioux Chief 888-PTM 3" PVC Clo...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$8.37
Sioux Chief 888-PTM 3" PVC Closet Flange with Stainless Steel Swivel Ring

Sioux Chief 888-PTM 3" PVC Closet Flange with Stainless Steel Swivel Ring

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Model: 888-PTM

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

$8.37
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Sioux Chief 888-PTM 3" PVC Closet Flange with Stainless Steel Swivel Ring

The Sioux Chief 888-PTM is a one-piece PVC closet flange built for rough-in toilet connections on 3" drain pipe. It features a test knockout (TKO) that seals the line for rough-in pressure testing, plus a corrosion-resistant 430 stainless steel swivel ring that lets the plumber rotate the flange freely to align the closet bolt slots with the finished floor before set screws or solvent weld are locked in. The knockout is engineered so it will not break apart into pieces that could fall down the drain pipe and cause a blockage, a common jobsite failure point with lower-quality flanges. This is a behind-the-wall, under-the-floor rough plumbing component intended for installation by a licensed plumber or contractor during the rough-in and finish stages of a toilet installation.

Key Features

  • Trade Size: Sized for 3" drain pipe connections in toilet rough-in applications.
  • Durable Construction: One-piece PVC/ABS body for a solid, corrosion-resistant connection to the closet bend.
  • Stainless Steel Swivel Ring: Corrosion-resistant 430 stainless steel ring swivels independently of the flange body, allowing the closet bolt slots to be rotated into correct alignment with the finished floor without disturbing the pipe connection.
  • Test Knockout (TKO): Integrated knockout seals the drain line for rough-in pressure testing and is removed when the toilet is set.
  • Fail-Safe Knockout Design: Patented construction (Patent #5,377,361) ensures the knockout will not break apart into fragments that could fall down the drain pipe and cause an obstruction.
  • Made in the USA: Manufactured in the United States for consistent quality control.

Technical Specifications

  • Country of Origin: United States
  • Trade Size: 3"
  • Body Material: PVC/ABS
  • Swivel Ring Material: 430 Stainless Steel
  • Packaging: 25 EA per case

Typical Applications

  • Residential and Commercial Toilet Rough-In Plumbing
  • New Construction Drain-Waste-Vent (DWV) Installations
  • Closet Flange Replacement During Bathroom Remodels
  • Rough-In Pressure Testing of 3" Toilet Drain Lines
  • Floor-Mounted Toilet Installations Requiring Bolt-Slot Alignment

Why Sioux Chief?

Sioux Chief engineers its closet flanges with jobsite failure points in mind, from the one-piece PVC/ABS body to the patented knockout that stays intact instead of dropping debris into the drain line. The corrosion-resistant 430 stainless steel swivel ring gives installers the flexibility to true up bolt slots on uneven finished floors without re-cutting or re-gluing the flange. Built in the United States, the 888-PTM gives plumbers and contractors a dependable, code-ready foundation for the toilet connection on every 3" rough-in.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Closet Flange
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:
PVC
Product Size:
3"

Sioux Chief 888-PTM – Frequently Asked Questions

1) What does the test knockout on a closet flange do, and when do I remove it?
The TKO on the 888-PTM seals the drain line so the rough-in can be pressure tested before the floor is finished. It stays in place through testing and comes out when the toilet is set. Its patented design (Patent #5,377,361) keeps it from breaking into fragments that drop into the pipe and block the line.
2) Can I rotate the closet bolt slots after the flange is glued to the pipe?
That is exactly what the swivel ring is for. The 430 stainless steel ring turns independently of the flange body, so the bolt slots can be lined up with the finished floor and the toilet without disturbing the solvent weld or re-cutting the pipe. Alignment happens after the pipe connection is made, not before.
3) Is a stainless steel swivel ring worth it over a plain plastic or steel ring flange?
On a bathroom floor the ring sits where water and cleaning chemicals end up, and plated steel rings are the part that rusts and breaks at the bolt slot. The 888-PTM uses 430 stainless, which is corrosion resistant, and the body is one-piece PVC/ABS so there is no separate collar to come loose. For remodels where the old flange failed at the bolt ears, that is the difference.
4) Can the Sioux Chief 888-PTM be used on a bathroom remodel, or is it new-construction only?
Both. It is listed for new construction DWV work and for closet flange replacement during bathroom remodels, as long as you are working with 3 inch pipe and can get a clean solvent weld to the closet bend. It is a rough plumbing component installed under the floor, so a remodel means pulling the toilet and getting access to the bend.
5) What is the model number and MPN for the Sioux Chief 3 inch PVC closet flange with the stainless swivel ring and test knockout?
Sioux Chief 888-PTM. The PTM designation is the combination you want: PVC body, test knockout, and the 430 stainless swivel ring. Sioux Chief builds the 888 family in several configurations, so ordering the plain number without the suffix can land you a flange with no knockout or a different ring.
6) How many Sioux Chief 888-PTM flanges come in a case?
25 each per case. That is the unit a plumbing contractor or multi-family job buys it in; for a single toilet replacement you only need one flange plus a wax ring and closet bolts, which are not included with the flange.
7) Is the Sioux Chief 888-PTM made in the USA for a Buy American spec?
Country of origin is the United States. If your project carries a domestic-content requirement on plumbing rough-in material, the 888-PTM flange is US manufactured. Confirm the exact clause your spec cites against the mill documentation if the job requires certification paperwork.
How fast can I get the Sioux Chief 888-PTM 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 888-PTM come with a warranty?
Absolutely. The Sioux Chief 888-PTM 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 888-PTM?
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 888-PTM from ZenSupply?
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