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🚫 Keep rats out, peace of mind in — the ultimate drain defender!
The MF3 Rat Barrier Non-Return Valve is a 4-inch lift check valve designed for plastic or salt-glazed clay pipes. It installs easily on the exit pipe from your property’s drainage system to the street sewer, allowing wastewater to flow out while preventing rats and backflow from entering. Made from high-grade plastic, it offers a cost-effective, durable solution to vermin intrusion, with an optional stainless steel model for enhanced protection.
| ASIN | B00PLN1UPA |
| Best Sellers Rank | 51,853 in Garden ( See Top 100 in Garden ) 6,369 in Pest Control Products |
| Brand | Multi-Flap |
| Connector Type | Sweat, Socket Weld |
| Customer Reviews | 3.7 3.7 out of 5 stars (108) |
| Exterior Finish | Plastic |
| Inlet Connection Size | 4 Inches |
| Inlet Connection Type | Socket Weld |
| Manufacturer | Multi-Flap |
| Material | Stainless Steel, Plastic |
| Model Number | MF3 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Number of Ports | 1 |
| Outlet Connection Size | 4 Inches |
| Outlet Connection Type | Sweat |
| Part Number | MF3 |
| Set Name | Rat Barrier |
| Size | 4 inches |
| Thread Size | 4 inches |
| Thread Type | Non-threaded |
| UPC | 609788764618 |
| Unit Count | 1.0 count |
| Valve Type | Lift Check Valve |
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