# Oatey 4 in. PVC DWV Backwater Valve

**Brand:** [Oatey](https://shop.coreranger.com/brands/Oatey)
**SKU:** 439042
**Price:** $42.18 · in stock
**URL:** https://shop.coreranger.com/product/oatey-4-in-pvc-dwv-backwater-valve-100144734

## Specifications

| Spec | Value |
|---|---|
| Model # | 439042 |
| Features | Threaded |
| Material | PVC |
| Pack Size | 1 |
| Connection | Sweat |
| Internet # | 100144734 |
| Returnable | 90-Day |
| Valve Type | Pressure Regulating |
| Application | Non-Potable Water |
| Store SKU # | 1003322064 |
| Indoor/Outdoor | Indoor |
| Product Depth (in.) | 11 in |
| Inlet Diameter (In.) | 4 |
| Product Length (in.) | 11 in |
| Manufacturer Warranty | 1 Year Limited |
| Outlet Diameter (In.) | 3 |
| Maximum Pressure (PSI) | 80 PSI |
| Compatible Pipe Material | PVC |
| Maximum Working Temperature (F) | 150 |

## Description

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