---
product_id: 9574482
title: "4 in. PVC Backwater Valve"
brand: "oatey"
price: "€ 66.34"
currency: EUR
in_stock: true
url: https://www.desertcart.it/products/9574482-4-in-pvc-backwater-valve
store_origin: IT
region: Italy
---

# Elastomeric seal for watertight protection Threaded access cap with neoprene seal 4-inch PVC durable valve 4 in. PVC Backwater Valve

**Brand:** oatey
**Price:** € 66.34
**Availability:** ✅ In Stock

## Summary

> 🛠️ Protect your space like a pro—no backflow, no worries!

## Quick Answers

- **What is this?** 4 in. PVC Backwater Valve by oatey
- **How much does it cost?** € 66.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/9574482-4-in-pvc-backwater-valve)

## Best For

- oatey enthusiasts

## Why This Product

- Trusted oatey brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Legacy:** Backed by Oatey’s 100+ years of plumbing expertise and industry-leading support.
- • **Tool-Free Maintenance:** Hand-tighten the threaded access cap with neoprene seal for quick, hassle-free inspections.
- • **Ultimate Flood Defense:** Prevents costly basement backflow with precision-engineered valve action.
- • **Seamless Seal Technology:** Elastomeric flapper ensures zero leakage, keeping your space dry and secure.
- • **Versatile Pipe Compatibility:** Fits DWV pipes and adapts easily for sewer and drain systems—one valve, multiple uses.

## Overview

The Oatey 4 in. PVC Backwater Valve is a robust plumbing solution designed to prevent sewage backflow into basements or low-lying areas. Featuring a durable PVC body, an elastomeric seal for a watertight flapper closure, and a user-friendly threaded access cap with neoprene seal, it fits standard DWV pipes and adapts for sewer and drain applications. Trusted by professionals for over a century, it offers reliable protection and easy maintenance backed by a 1-year limited warranty.

## Description

Oatey 4 in. PVC Backwater Valve

## Features

- 4 in. PVC backwater valve
- Protects low areas or basements from backflow or waste from street sewers
- Elastomeric seal in quick action flapper ensures a water tight seal
- Threaded access cap incorporates a neoprene seal for positive sealing and can be tightened or removed by hand
- Valve hub fits DWV pipe and can be adapted for sewer and drain pipe

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Oatey |
| Part Number | 43904 |
| Item Weight | 4.25 pounds |
| Product Dimensions | 12 x 9 x 8 inches |
| Item model number | 43904 |
| Is Discontinued By Manufacturer | No |
| Size | 4 Inch |
| Color | White |
| Style | PVC |
| Material | PVC |
| Shape | Other |
| Item Package Quantity | 1 |
| Included Components | Backwater Valve |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | 1-year limited |

## Product Details

- **Material:** PVC
- **Brand:** Oatey
- **Item dimensions L x W x H:** 12 x 9 x 8 inches
- **Inlet Connection Size:** 4 Inches
- **Inlet Connection Type:** threaded
- **Outlet Connection Type:** FNPT
- **Number of Ports:** 1
- **Outlet Connection Size:** 4 Inches
- **Valve Type:** backwater,backwater valve
- **Global Trade Identification Number:** 00038753439044

## Images

![4 in. PVC Backwater Valve - Image 1](https://m.media-amazon.com/images/I/711ZR0mU37L.jpg)

## Available Options

This product comes in different **Color, Size** options.

## Questions & Answers

**Q: This is a type of check valve correct? The ability to take the lid off serves what purpose? Could you run a snake down the line with the top off?**
A: Taking the lid off allows you to clear debris out of the valve. Yes--you get full access to the line from the top of the valve. I use it to drain a yard that floods during high tide. Works well.

**Q: Can this valve be used under ground?**
A: Yes, our Backwater valves can be used underground.  You can also install an access sleeve (straight piece of pipe) in order to service the valve at the surface.

**Q: I received this valve and it came with a seal for the flapper. However, the seal will not stay in the grove on the flapper. Any suggestions?**
A: Hi. It comes with 2 O rings,  one is for the flapper, add some syllicon glue, like the used on motor engines,  this backwater works really good,

**Q: Does this fit 3" schedule 40?**
A: Yes, 3" schedule 40 PVC

## Frequently Bought Together

- Oatey 4 in. PVC Backwater Valve
- Oatey 3 in. PVC Backwater Valve
- Supply Giant 37622CS No-Hub Coupling Heavy Duty Colored Shield, 4 inch, Red

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*Product available on Desertcart Italy*
*Store origin: IT*
*Last updated: 2026-01-23*