🚰 Seal your space from sewer surprises with Oatey’s backwater valve!
The Oatey 3-inch PVC Backwater Valve is a professional-grade plumbing solution designed to protect basements and low areas from sewer backflow. Featuring a quick-action elastomeric seal flapper and a hand-tightenable neoprene-sealed access cap, it offers reliable, maintenance-friendly performance. Lightweight and compatible with standard 3-inch pipes, this valve carries the trusted quality of Oatey’s century-long plumbing legacy.
| Manufacturer | Oatey |
| Part Number | 43900 |
| Item Weight | 2.35 pounds |
| Product Dimensions | 8 x 7 x 7 inches |
| Item model number | 43900 |
| Size | 3 Inch |
| Color | White |
| Style | PVC |
| Material | Polyvinyl Chloride |
| Item Package Quantity | 1 |
| Measurement System | inch |
| Included Components | PVC Backwater Valve |
| Batteries Required? | No |
| Warranty Description | 1-year limited |
V**N
Stops toilet from overflowing
My downstairs bathroom toilet overflowed twice due to septic tank backing up. I installed this and now I never need to worry about the toilet overflowing, ruining my flooring. Very easy to install in you know how. Easy to maintain. Wish I did this years ago. Very good quality. Works perfect. Fits perfect. Silent operation does not restrict flow.
L**R
O ring problem
The seal on flapper was gone when opened to see why wasn't working need new o ring
K**R
First class product. Not one drawback or problem.
100% perfect. I bought 4 to use around my house to solve hurricane surge isssues in Florida.
T**.
What You Would Expect - Loose O-Ring on the Flap
This back flow preventer is exactly what you would expect. The only con that I have is that the O ring that is on the flap is not permanently installed - which can be a good thing, but it does not stay on the flap well. This can lead to it not sealing properly and not doing its job. Overall, I would recommend it, but I would just caution you to make sure that the o ring is seated properly and that it doesn't fall off during install or during the first couple of uses.
T**C
Works good
Very good back flow perventer good price
R**H
Flap doesn't shut tight.
The flap is just plastic without a seal. You have hard PVC sitting on hard PVC. As a result, you have water trickling through, which defeats the purpose of this product.
K**.
I think it’s probably a great product just one was broken
I ordered 43 inch backwater preventers. The door has a tab that is broken on one of the backwater preventers. Should I send the part back or would you send me a new door/flapper?
N**K
Keeps waste water from entering your basement.
It works great and the cap design allows easy access to the inside for inspection and cleaning.
Trustpilot
5 days ago
1 day ago
