---
product_id: 639886006
title: "Cinsda 4\" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow"
brand: "cinsda"
price: "VT21734"
currency: VUV
in_stock: true
reviews_count: 8
category: "Cinsda"
url: https://www.desertcart.vu/products/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer
store_origin: VU
region: Vanuatu
---

# Watertight EPDM & rubber seals Heat & corrosion resistant PVC 4-inch PVC connection Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow

**Brand:** cinsda
**Price:** VT21734
**Availability:** ✅ In Stock

## Summary

> 🚫💧 Stop Backflow Before It Starts — Protect Your Space Like a Pro!

## Quick Answers

- **What is this?** Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow by cinsda
- **How much does it cost?** VT21734 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/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer)

## 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

- • **Durable High-Impact PVC:** Built to withstand heat, corrosion, and pressure fluctuations for long-lasting reliability.
- • **Leak-Proof Seal Technology:** Thickened rubber rings and EPDM cover ensure zero backflow and no water leakage.
- • **Seamless 4" PVC Integration:** Effortlessly fits standard 4-inch drainage systems for quick upgrades.
- • **Versatile Indoor & Outdoor Use:** Perfect for home and light industrial sewage systems, protecting your space from costly backups.
- • **Simple Solvent-Weld Installation:** No fuss, no mess—secure your drainage system with a watertight bond in minutes.

## Overview

The 4" PVC Backwater Valve by Cinsda is a robust, corrosion-resistant valve designed to prevent sewage backflow in residential and light industrial drainage systems. Featuring durable PVC construction, watertight EPDM and rubber seals, and easy solvent-weld installation, it ensures reliable protection against costly water damage and system failures.

## 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: Perfecto elemento sanitario - Funciona perfecto. Cera plagas, cero olores, de afuera hacia adentro.
Review: Good - Good

## 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 sturdy 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 | #25,760 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #757 in Pipe Fittings |
| Brand | Cinsda |
| Brand Name | Cinsda |
| Color | White |
| Connector Type | Tee |
| Customer Reviews | 4.7 out of 5 stars 88 Reviews |
| Exterior Finish | PVC |
| Included Components | 4" Backwater Valve |
| Item Dimensions | 9.8 x 7 x 6.78 inches |
| Item Type Name | Backwater Valve |
| Item Weight | 1.68 Kilograms |
| Item dimensions L x W x H | 9.8 x 7 x 6.78 inches |
| Manufacturer | Cinsda |
| Manufacturer Part Number | 4IBVBD |
| Material | Polyvinyl Chloride |
| Material Type | Polyvinyl Chloride |
| Model Number | 4IBVBD |
| Number of Pieces | 1 |
| Size | 4 Inch |
| Unit Count | 1.0 Count |

## Product Details

- **Brand:** Cinsda
- **Color:** White
- **Connector Type:** Tee
- **Exterior Finish:** PVC
- **Item dimensions L x W x H:** 9.8 x 7 x 6.78 inches
- **Manufacturer:** Cinsda
- **Material:** Polyvinyl Chloride
- **Number of Pieces:** 1
- **Size:** 4 Inch

## Images

![Cinsda 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)
![Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Image 2](https://m.media-amazon.com/images/I/5186wy5rzWL.jpg)
![Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Image 3](https://m.media-amazon.com/images/I/61L4frhBBAL.jpg)
![Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Image 4](https://m.media-amazon.com/images/I/61nTO-wtAiL.jpg)
![Cinsda 4" PVC Backwater Valve, 4 Inch Back Flow Preventer Valve, Backflow Water Valve Prevents Sewage Backflow - Image 5](https://m.media-amazon.com/images/I/51d2iWhSxjL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfecto elemento sanitario
*by C***. on February 28, 2026*

Funciona perfecto. Cera plagas, cero olores, de afuera hacia adentro.

### ⭐⭐⭐⭐⭐ Good
*by J***O on February 28, 2026*

Good

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

Works as it should

## Frequently Bought Together

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- Tondiamo Backwater Valve Drain Backflow Preventer Valve Prevent Sewage and Rainwater from Flowing Back(White PVC,4 Inch)

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**Shop now:** [https://www.desertcart.vu/products/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer](https://www.desertcart.vu/products/639886006-cinsda-4-pvc-backwater-valve-4-inch-back-flow-preventer)

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*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-05-03*