Prevent sewage or any other fluid from flowing back into your water system with the Oatey 4 in. PVC Backwater Valve. Its elastomeric seal inside the flapper ensures a tight seal, preventing fluid from entering. Designed for use with 4 Sch. 40 piping system.
- Made of PVC
- Ideal for protecting low areas or basements from backflow or waste from street sewers
- Hub fits DWV pipe and can be adapted for sewer and drain pipes
- Flapper has an elastomeric seal, ensuring a tight water seal
- Threaded cap