---
product_id: 660288761
title: "4\" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow"
brand: "cinsda"
price: "VT39566"
currency: VUV
in_stock: true
reviews_count: 5
category: "Cinsda"
url: https://www.desertcart.vu/products/660288761-4-pvc-backwater-valve-4-inch-back-flow-preventer-valve
store_origin: VU
region: Vanuatu
---

# Watertight EPDM seals 4-inch PVC connection Corrosion & heat resistant 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow

**Brand:** cinsda
**Price:** VT39566
**Availability:** ✅ In Stock

## Summary

> 🚫💧 Stop Backflow Before It Starts — Protect Your Space with Confidence!

## Quick Answers

- **What is this?** 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow by cinsda
- **How much does it cost?** VT39566 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/660288761-4-pvc-backwater-valve-4-inch-back-flow-preventer-valve)

## Best For

- cinsda enthusiasts

## Why This Product

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

## Key Features

- • **Precision 4" Fit:** Seamlessly integrates with standard 4-inch PVC drainage systems for hassle-free installation.
- • **Durable PVC Build:** Engineered from high-impact, corrosion-resistant PVC to withstand harsh environments and ensure longevity.
- • **Leak-Proof Sealing:** Thickened rubber rings and EPDM-sealed access cover guarantee zero backflow and water leakage.
- • **Versatile Application:** Ideal for residential and industrial sewage systems, protecting your property from costly backflow damage.
- • **Effortless Installation:** Solvent-weld compatible design makes setup quick, secure, and maintenance-friendly.

## Overview

The Cinsda 4" PVC Backwater Valve is a robust, corrosion-resistant check valve designed to prevent sewage backflow in 4-inch PVC drainage systems. Featuring durable PVC construction, watertight EPDM seals, and easy solvent-weld installation, it ensures reliable protection for residential and industrial plumbing setups.

## Description

Wide range of uses: Made of hard PVC and corrosion resistance. Perfect for indoor and outdoor use, drainage and sewer piping systems; patio, lawn, garden, and septic tank piping systems etc. Installed in the PVC drain and sewer pipe system.

Review: French Drain backflow preventer - Works as it should
Review: Buried - Seemed good enough, we'll find out if water doesn't backflush

## Features

- Designed for connecting 4-inch PVC drains in the drainage system, this valve prevents the backflow of water in the pipeline due to pressure reduction or other potential causes.
- The backwater valve is made of durable PVC for high impact strength and resistance to heat and corrosion.
- Our back flow preventer valve can be solvent-welded for a watertight connection. The installation is simple and efficient.
- Thickened rubber rings embedded in the water stop baffle guarantee a watertight seal, and the access cover is also sealed with EPDM rubber to prevent water leakage.
- The backflow valve, as part of the DWV system, is suitable for connecting PVC sewers and drains. Ideal for sewage disposal in household and certain industries, it prevents sewer backflow.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D3QTWTCR |
| Best Sellers Rank | 231,590 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 6,843 in Pipe Fittings |
| Brand | Cinsda |
| Customer Reviews | 4.8 out of 5 stars 35 Reviews |
| Exterior Finish | PVC |
| Included Components | 4" Backwater Valve |
| Inlet Connection Size | 4 Inches |
| Inlet Connection Type | FNPT |
| Item Dimensions | 24.9 x 17.8 x 17.2 centimetres |
| Item Type Name | Backwater Valve |
| Item height | 6.78 inches |
| Manufacturer | Cinsda |
| Material | Polyvinyl Chloride (PVC) |
| Model Number | 4IBVBD |
| Outlet Connection Size | 4 Inches |
| Outlet Connection Type | FNPT |
| Specification Met | CSA, NSF, ULC, UPC |
| Unit Count | 1.0 count |
| Valve Type | check valve |

## Product Details

- **Material:** Polyvinyl Chloride (PVC)
- **Brand:** Cinsda
- **Item dimensions L x W x H:** 24.9 x 17.8 x 17.2 centimetres
- **Exterior finish:** PVC
- **Inlet connection size:** 4 Inches
- **Inlet connection type:** FNPT
- **Outlet connection type:** FNPT
- **Outlet connection size:** 4 Inches
- **Specification met:** CSA, NSF, ULC, UPC
- **Manufacturer:** Cinsda

## Images

![4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Image 1](https://m.media-amazon.com/images/I/61VNt5B7hVL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ French Drain backflow preventer
*by R***S on 10 October 2025*

Works as it should

### ⭐⭐⭐⭐⭐ Buried
*by A***R on 15 September 2025*

Seemed good enough, we'll find out if water doesn't backflush

### ⭐⭐⭐⭐⭐ Works great
*by D***M on 12 August 2025*

Just what I needed, no more foul odor.

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.vu/products/660288761-4-pvc-backwater-valve-4-inch-back-flow-preventer-valve](https://www.desertcart.vu/products/660288761-4-pvc-backwater-valve-4-inch-back-flow-preventer-valve)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-01-25*