Sioux Chief 869 Series PVC Bac...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$31.67
Sioux Chief 869 Series PVC Backwater Valve, DWV

Sioux Chief 869 Series PVC Backwater Valve, DWV

(No reviews yet) Write a Review

Model: 869-2P

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

$31.67
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Sioux Chief 869 Series PVC Backwater Valve, DWV

The Sioux Chief 869 Series is a line of PVC backwater valves built for horizontal, gravity-flow drain-waste-vent (DWV) lines, available in 2" and 6" connection sizes to match standard DWV branch and main line diameters. Every model in the series features a removable threaded access cap that lets a plumber or contractor open the line for inspection and maintenance of the internal flapper mechanism without cutting into the pipe run. These valves are designed to prevent sewer backflow in horizontal DWV piping and are intended for rough-in installation behind a wall or under a floor, upstream of fixtures that could be affected by a backed-up main line. Models are manufactured in China and packaged for rough-in crews stocking multiple installations on the same job.

Key Features

  • Trade Size Range: Available in 2" and 6" connections sized for standard DWV branch and main lines.
  • Durable Construction: Molded PVC body suited for drain-waste-vent piping systems.
  • Threaded Access Cap: Removable threaded access allows easy maintenance and inspection of the valve mechanism without disturbing the surrounding pipe.
  • Extension Compatible: For the 6" backwater valve, use 10" Schedule 40 pipe (not included) to bring the access cap up to grade or finished floor level.
  • Orientation Requirement: Engineered strictly for horizontal, gravity-flow installations — do not install vertically, as the flapper mechanism relies on gravity to seat correctly.
  • Packaging: Supplied 8 EA per package for rough-in crews stocking multiple installations.

Technical Specifications

  • Country of Origin: China
  • Trade Size Options: 2", 6"
  • Material: PVC
  • Packaging: 8 EA

Typical Applications

  • Horizontal DWV main and branch line installations
  • Backflow prevention on gravity-flow drain lines
  • Residential and commercial rough-in plumbing below grade or under slab
  • Renovation projects requiring a serviceable backwater valve with accessible cleanout cap
  • New construction DWV systems where a PVC branch feeds into a protected main

Why Sioux Chief?

Sioux Chief builds the 869 Series PVC backwater valves with a threaded access cap so plumbers can inspect and service the internal flapper mechanism without re-cutting the DWV line, across both the 2" and 6" sizes in the lineup. The PVC construction and gravity-flow design make these a straightforward rough-in component for horizontal drain runs that need reliable backflow protection. Packaged 8 EA per box, they're a practical stock item for crews running multiple installations on the same job, whether servicing a 2" branch or a 6" main.

Manufacturer Resources

Spec Sheet

Product Specs

Product Type:
Backwater Valve
Connection Type:
Threaded
Country of Origin:
China
Department:
Plumbing
Product Group:
Rough-In and Supports
Product Subgroup:
Fittings and Valves
Product Material:
PVC
Product Size:
2"

Sioux Chief 869-2P – Frequently Asked Questions

1) Can the Sioux Chief 869 backwater valve be installed vertically in a stack?
No. The 869 Series is built strictly for horizontal, gravity-flow DWV runs. The internal flapper relies on gravity to seat, so a vertical installation will not seal. For a vertical stack you need a different style of valve.
2) How do I bring the access cap on a 6 inch backwater valve up to finished floor level?
Use 10 inch Schedule 40 pipe to extend the 6 inch 869 valve's access cap up to grade or finished floor. That extension pipe is not supplied with the valve, so order it separately.
3) Can the 869 backwater valve be serviced after it's buried under a slab?
Yes, that's the point of the threaded access cap. It unscrews so you can inspect or clear the internal flapper without cutting the DWV line open. Under a slab or behind a wall you still need access to the cap, which is why the 6 inch version is usually extended to finished floor with 10 inch Schedule 40 pipe.
4) Is the Sioux Chief 869 valve body PVC or cast iron?
Molded PVC, intended for DWV piping. That keeps it compatible with PVC drain runs and keeps weight down for under-slab rough-in, but it is not a cast iron valve, so it is not the choice where a job spec calls for a metal body.
5) Where in the drain system should a backwater valve like the 869 go?
Upstream of the fixtures you want protected and downstream enough to catch a backed-up main, in a horizontal gravity-flow section of the DWV line. Typical placement is in rough-in behind a wall or under a floor, protecting a 2 inch branch or sitting in a 6 inch main.
6) How many Sioux Chief 869 backwater valves come in a box?
Packaged 8 each per box, which suits a crew rough-in multiple units on the same job rather than a one-off replacement.
How fast can I get the Sioux Chief 869-2P 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 869-2P come with a warranty?
Absolutely. The Sioux Chief 869-2P 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 869-2P?
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 869-2P from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!