🚀 Upgrade your plumbing game with the valve that works as hard as you do!
The 4" Mainline ABS Backwater Valve features a full-port 4-inch inlet for optimal flow, a patented design that minimizes failure and simplifies maintenance, and a clear inspection top for quick visual checks. Made from durable ABS material, it offers reliable, long-lasting protection against backflow with easy glue installation.
| Material | Acrylonitrile Butadiene Styrene |
| Brand | Mainline |
| Item dimensions L x W x H | 18 x 14 x 14 inches |
| Exterior Finish | Abs |
| Inlet Connection Size | 14 Inches |
| Inlet Connection Type | Full port |
| Outlet Connection Type | FNPT |
| Number of Ports | 2 |
| Valve Type | Lift Check Valve |
| Manufacturer | Mainline Backflow Products Inc. |
| UPC | 696794000014 |
| Part Number | 4963 |
| Item Weight | 5.97 pounds |
| Product Dimensions | 18 x 14 x 14 inches |
| Item model number | ML-4963A |
| Is Discontinued By Manufacturer | No |
| Size | 4" DWV |
| Color | Black |
| Installation Method | Glue |
| Item Package Quantity | 1 |
| Handle Material | ABS |
| Measurement System | inch |
| Batteries Included? | No |
| Batteries Required? | No |
J**
Great product. Worth the money
Easy to install. Absolutely works. Had flash flooding and no worries with. y basement getting back flow from city sewer line coming into the house. Very easy access.
D**R
So much more volume than standard. Must have.
Easy to install, working as it should.
M**A
Check Valve
Definitely buy this item i bought it 4 weeks ago installed it and we had a storm in New York July 2022 and it worked im so glad all my neighbors basement were flooded. This check valve Definitely works 100%. Very happy with this product.
Trustpilot
3 days ago
2 weeks ago
