---
product_id: 354911096
title: "Internal Backwater Valve,4-F 4\" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection"
brand: "minimprover"
price: "R$707"
currency: BRL
in_stock: true
url: https://www.desertcart.com.br/products/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard
store_origin: BR
region: Brazil
---

# 4-inch float model seal Quick screwdriver install Solid brass durability Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection

**Brand:** minimprover
**Price:** R$707
**Availability:** ✅ In Stock

## Summary

> 🚨 Don’t let sewer backups catch you off guard—install the Flood-Guard and stay dry in style!

## Quick Answers

- **What is this?** Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection by minimprover
- **How much does it cost?** R$707 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard)

## Best For

- minimprover enthusiasts

## Why This Product

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

## Key Features

- • **Smart Float Valve:** Automatically seals drains when sewer backup occurs, protecting your property instantly.
- • **Unmatched Durability:** Crafted from solid brass for corrosion resistance and long-lasting flood defense.
- • **Compact & Lightweight:** Designed to fit standard 4-inch flood drains without bulky hardware or hassle.
- • **Effortless Installation:** Get flood protection in minutes with just a screwdriver—no plumber needed.
- • **Precision Seal Technology:** Molded rubber gaskets create a slip-free, watertight barrier against sewer backflow.

## Overview

The Internal Backwater Valve 4-F 4" Float Model Flood-Guard is a premium flood drain backflow preventer made from solid brass and molded rubber. Designed for 4-inch flood drains, it features an automatic float valve that seals off sewer backups, protecting your property from costly water damage. Easy to install with just a screwdriver, this compact device offers reliable, corrosion-resistant flood protection for modern homes and businesses.

## Description

★ Great Material:  The main parts are made of solid brass which is durable and corrosion resistant.The gaskets are made of molded rubber which is soft and durable.  ★ Adventage:  ***1.Very easliy to install just need a screwdriver. ***2.Help reduce losses, and some messy cleanup work. ***3.The embeded gasket provides strong seal without slipping. ***4.Solid brass construction for unsurpassed durability.  ★ Package includes:   1Pack 2" Float Model Flood-Guard.

## Features

- ★ 【Material】: The main parts are made of solid brass which is durable and corrosion resistant.The gaskets are made of molded rubber which is soft and durable.
- ★ 【SIZE】: 4-F 4" Float Model Flood-Guard for 4-inch Flood Drains.
- ★ 【Introduction】: Flood-Guard operates like a check valve to seal off water back-up caused by overloaded sewers. Water flows normally through the drain until the sewer begins to back up. Then the Flood-Guard float rises to seal off the drain opening until the water recedes.
- ★ 【Adventage】: A screwdriver and a couple of minutes are all you need to install a Flood-Guard. Once in place, it can prevent property damage and a very messy clean-up job.
- ★ 【Package Include】: 1Pack 4" Float Model Flood-Guard.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Minimprover |
| Part number | H087-4 |
| Item Weight | 358 g |
| Package Dimensions | 10.31 x 10.21 x 9.3 cm; 358 g |
| Item model number | H087-4 |
| Size | 4" Flood-Guard |
| Material | Brass Rubber |
| Batteries Included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Brass Rubber
- **Brand:** Minimprover
- **Exterior finish:** Brass
- **Inlet connection size:** 4 Inches
- **Inlet connection type:** Standard Pipe Thread

## Images

![Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 1](https://m.media-amazon.com/images/I/61l9DzIp9kL.jpg)

## Available Options

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

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- Minimprover Internal Backwater Valve,4-F 4" Float Model Flood-Guard for 4-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection
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**Shop now:** [https://www.desertcart.com.br/products/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard](https://www.desertcart.com.br/products/354911096-internal-backwater-valve-4-f-4-float-model-flood-guard)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-02-27*