Sioux Chief 868-523 15" Dia Ca...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$274.05
Sioux Chief 868-523 15" Dia Cast Iron Dome Roof Drain with 3" No-Hub Outlet

Sioux Chief 868-523 15" Dia Cast Iron Dome Roof Drain with 3" No-Hub Outlet

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Model: 868-523

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

$274.05
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Sioux Chief 868-523 15" Dia Cast Iron Dome Roof Drain with 3" No-Hub Outlet

The Sioux Chief 868-523 is a cast iron dome roof drain built for flat-roof drainage on commercial and residential rough-in projects. It features a 15" diameter cast iron dome body with a 3" no-hub (NH) outlet connection for tying into cast iron DWV piping below the deck. The anchor flange and integrated membrane clamp grip roofing membrane and flashing materials to create a secure, watertight seal around the drain opening, while the low-profile dome design helps keep debris out of the drain line without restricting water flow off the roof surface. This is a behind-the-roof-deck rough-in component intended for installation by a licensed plumber or roofing contractor during new construction or re-roofing work, not a decorative or exposed fixture.

Key Features

  • Dome Diameter: 15" cast iron dome sized to shed water efficiently from a flat roof drainage area.
  • Outlet Connection: 3" no-hub (NH) outlet for direct connection to cast iron DWV piping using a standard no-hub coupling.
  • Durable Construction: Cast iron dome and body provide a heavy-duty, long-service-life drain suited to the structural loads and weathering of roof-deck installations.
  • Membrane Clamp & Anchor Flange: Provides a secure mechanical grip on roof membrane and flashing materials to help maintain a watertight seal at the roof penetration.
  • Low-Profile Dome Design: Engineered for flat roofs; the dome shape helps prevent leaves, debris, and roofing material from entering and clogging the drain line.
  • Packaging: Sold as 1 EA for individual rough-in installation.

Technical Specifications

  • Dome Diameter: 15"
  • Outlet Size: 3" No-Hub (NH)
  • Material: Cast Iron
  • Country of Origin: China
  • Packaging: 1 EA

Typical Applications

  • Flat Roof Drainage Systems
  • Commercial and Multi-Family Roof Deck Construction
  • Re-Roofing and Roof Drain Replacement
  • Connection to Cast Iron DWV Piping Below Deck
  • New Construction Rough-In Plumbing

Why Sioux Chief?

Sioux Chief builds the 868-523 roof drain from durable cast iron to withstand the structural demands and exposure of flat-roof installations. The membrane clamp and anchor flange design give installers a dependable way to secure roofing materials around the drain for a lasting seal, while the low-profile dome keeps debris out of the drain line without added maintenance. For plumbers and roofing contractors who need a dependable rough-in roof drain built to standard no-hub connection practices, the 868-523 delivers straightforward, reliable performance.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Roof Drain
Connection Type:
No-Hub
Country of Origin:
China
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Drains and Cleanouts
Product Material:
Cast Iron
Product Size:
15"

Sioux Chief 868-523 – Frequently Asked Questions

1) How does the Sioux Chief 868-523 roof drain connect to the drain line below the deck?
The 868-523 has a 3 inch no-hub outlet. You tie it into cast iron DWV piping below the roof deck with a standard no-hub (shielded) coupling, so no caulking or hub joint is needed. If the piping under your deck is 3 inch hub-and-spigot or 3 inch PVC, you can still land on it with a no-hub coupling or transition coupling sized for 3 inch cast iron.
2) Does the Sioux Chief 868-523 include a membrane clamp, or do I buy that separately?
The membrane clamp is integrated, and the drain also has an anchor flange. Between the two, the roofer clamps the membrane and flashing down mechanically at the penetration for a watertight seal, so you are not sourcing a separate clamping ring. It ships 1 each.
3) I am replacing an existing 3 inch roof drain. Can I use the 868-523 as a drop-in?
If the existing outlet is 3 inch cast iron, the 868-523 lands on it with a no-hub coupling and it is a common re-roof replacement. What you need to verify on your roof is the opening in the deck and the insulation thickness at the sump, since the 868-523 is a 15 inch dome drain with an anchor flange and it needs enough deck opening and clamping surface to seat. Outlet size other than 3 inch means a different drain.
4) Will a 15 inch dome roof drain work on a flat built-up or membrane roof?
That is exactly what the 868-523 is built for. The 15 inch cast iron dome sits low on a flat roof and sheds water off the deck surface, and the dome keeps leaves, gravel and loose roofing material out of the 3 inch line. It is a behind-the-deck rough-in part, not a finished or decorative fixture.
5) Do I need an under-deck clamp or extension to use this roof drain on a thick insulated deck?
The 868-523 as supplied is the drain body with anchor flange, integrated membrane clamp, and 3 inch no-hub outlet. Anything beyond that, an underdeck clamp, extension ring for deep insulation, or a gravel guard, is a separate order. Measure your membrane-to-structural-deck depth before you specify, because that depth is what decides whether a plain-body drain seats or you need an extension.
6) Is a cast iron roof drain worth it over a plastic one for a commercial re-roof?
Cast iron is the material here, body and dome. On a roof deck that means it takes foot traffic during re-roofing, holds up to UV and freeze-thaw, and will not deform where the membrane is clamped. On a commercial or multi-family re-roof where the drain has to outlive the next membrane, that is the reason to spend on cast iron rather than plastic.
How fast can I get the Sioux Chief 868-523 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 868-523 come with a warranty?
Absolutely. The Sioux Chief 868-523 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 868-523?
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 868-523 from ZenSupply?
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