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🛠️ Protect your space with precision-engineered peace of mind!
The Oatey 4 In. PVC Backwater Valve is a professional-grade sewage check valve designed to prevent backflow into basements or low-lying areas. Featuring a quick-action elastomeric seal and a threaded access cap for easy maintenance, it fits standard 4-inch PVC Schedule 40 pipes and meets rigorous ASME, ASTM, and ANSI standards. Trusted by plumbing pros for over 100 years, this valve offers durable, reliable protection against costly water damage.

| ASIN | B000BQSFJ6 |
| Best Sellers Rank | #432,047 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #553 in Faucet Valves |
| Brand Name | Oatey |
| Connector Type | connector_type |
| Customer Reviews | 4.6 4.6 out of 5 stars (288) |
| Exterior Finish | White |
| Global Trade Identification Number | 00038753439044 |
| Included Components | Backwater Valve |
| Inlet Connection Size | 4 inches |
| Inlet Connection Type | threaded |
| Item Dimensions | 11.25 x 8 x 7.4 inches |
| Item Type Name | Oatey |
| Item Weight | 4.3 pounds |
| Manufacturer | Oatey |
| Manufacturer Part Number | 43904 |
| Manufacturer Warranty Description | 1-year limited |
| Material Type | PVC |
| Model Number | 43904 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 4 inches |
| Outlet Connection Type | FNPT |
| Size | 4 Inch |
| Specification Met | ASME, ASTM, ANSI |
| Thread Size | 4 inches |
| Thread Type | threaded |
| UPC | 038753439044 |
| Unit Count | 1 Count |
| Valve Type | backwater,backwater valve |
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