Oatey 4 in. PVC DWV Backwater Valve

The Oatey Backwater Valve is designed as a sewage check valve to prevent pumped water from flowing back into the basin. Its elastomeric seal inside the flapper ensures a tight seal, preventing fluid from entering. Oatey products have earned the trust of plumbing professionals for over 100 years.

• Protects low areas and basements from backflow or waste water
• Tight, waterproof elastomeric seal inside flapper
• Hub fits DWV but can be adapted for sewer and drain