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Sioux Chief 869-S3PPK 3" PVC Backwater Valve for Horizontal Installation
The Sioux Chief 869-S3PPK is a 3" PVC backwater valve engineered for horizontal, behind-the-wall or under-slab drain-waste-vent (DWV) rough-in installations. Built with a PVC body sized for 3" DWV drain lines, it is designed to help block reverse flow of wastewater back through a horizontal branch or main drain run rather than letting it surcharge back toward fixtures. Manufactured in the United States and packaged 2 EA per box, the 869-S3PPK is sized and built for plumbers and contractors handling new construction rough-in, remodel work, or backflow-prevention retrofits on horizontal drain runs.
Key Features
- Trade Size: 3" connection sized to mate with 3" PVC DWV drain lines during rough-in.
- Durable Construction: PVC body offers corrosion and chemical resistance suited to below-slab, below-grade, and behind-the-wall rough-in use.
- Backwater Valve Function: Installed in-line on the drain to help stop wastewater from backing up into the building through the connected drain run during a municipal or lateral line surcharge.
- Installation Orientation: For horizontal installations only — per manufacturer instructions, do not install this valve in a vertical drain run.
- Packaging: Supplied 2 EA per box, making it easy to stock multiple rough-in installs on a single job or truck.
- Country of Origin: Manufactured in the United States.
Technical Specifications
- Country of Origin: United States
- Packaging: 2 EA
- Trade Size: 3"
- Material: PVC
- Installation Orientation: Horizontal Only
Typical Applications
- Horizontal DWV Drain Lines
- Below-Slab and Behind-the-Wall Rough-In
- Backflow and Sewage Backup Prevention
- Residential and Commercial Plumbing Rough-In
- New Construction and Remodel Installations
- Backwater Valve Retrofits on Existing Drain Runs
Why Sioux Chief?
Sioux Chief builds its PVC drainage products in the United States for the day-to-day demands of rough-in plumbing work, from new construction to remodel and retrofit jobs. The 869-S3PPK's PVC construction and dedicated 3" sizing give installers a straightforward, code-familiar way to add horizontal backwater protection to a DWV drain run without reworking the surrounding pipe. Because it is packaged 2 EA per box, crews can keep extras on the truck for multi-fixture or multi-unit jobs. Specifying Sioux Chief means working with drainage components plumbing professionals already rely on throughout rough-in DWV systems.
Manufacturer Resources
Spec Sheet
Product Specs
- Product Type:
- Backwater Valve
- Configuration:
- Horizontal Installation
- Country of Origin:
- United States
- Department:
- Plumbing
- Product Group:
- Rough-In and Supports
- Product Subgroup:
- Fittings and Valves
- Product Material:
- PVC
- Product Size:
- 3"