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🔧 Stop backflow before it starts — secure your plumbing like a pro!
The Oatey 4-Inch PVC Backwater Valve is a professionally engineered sewage check valve designed to prevent backflow with a durable elastomeric seal. Made in the USA and compliant with ASME, ASTM, and ANSI standards, it offers reliable, leak-proof protection for residential and commercial plumbing systems. Trusted by plumbing experts for over a century, this valve ensures your property stays safe from unwanted water intrusion.
| ASIN | B000BQSFJ6 |
| Best Sellers Rank | #155,862 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #182 in Faucet Valves |
| Brand Name | Oatey |
| Connector Type | connector_type |
| Customer Reviews | 4.6 4.6 out of 5 stars (285) |
| 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 | 4.25 Pounds |
| Manufacturer | Oatey |
| Manufacturer Part Number | 43904 |
| Manufacturer Warranty Description | 1-year limited |
| Material Type | Polyvinyl Chloride (PVC) |
| Model Number | 43904 |
| 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 | 1.0 Count |
| Valve Type | backwater,backwater valve |
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