---
product_id: 764578787
title: "Internal Backwater Valve,3-F 3\" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection"
brand: "minimprover"
price: "₪298"
currency: ILS
in_stock: true
reviews_count: 5
category: "Minimprover"
url: https://www.desertcart.co.il/products/764578787-internal-backwater-valve-3-f-3-float-model-flood-guard
store_origin: IL
region: Israel
---

# 3-inch flood drain fit Automatic float check valve Solid brass durability Internal Backwater Valve,3-F 3" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection

**Brand:** minimprover
**Price:** ₪298
**Availability:** ✅ In Stock

## Summary

> 🚨 Don’t wait for the flood—seal your space with smart brass power!

## Quick Answers

- **What is this?** Internal Backwater Valve,3-F 3" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection by minimprover
- **How much does it cost?** ₪298 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.il](https://www.desertcart.co.il/products/764578787-internal-backwater-valve-3-f-3-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

- • **Quick & Easy Installation:** Get flood protection in minutes with just a screwdriver—no professional help needed.
- • **Mess-Free Flood Prevention:** Stops costly water damage and unpleasant backups before they start, saving you time and stress.
- • **Smart Float-Activated Seal:** Automatically blocks sewer backflow when water levels rise, protecting your property effortlessly.
- • **Built to Last with Solid Brass:** Corrosion-resistant brass ensures long-term flood defense without rust or wear.
- • **Precision Fit for 3-Inch Drains:** Designed specifically for 3-inch flood drains, guaranteeing seamless installation and optimal performance.

## Overview

The Minimprover 3" Float Model Flood-Guard is a premium brass check valve designed to prevent sewer backflow in 3-inch flood drains. Featuring a corrosion-resistant solid brass body and durable rubber gaskets, it automatically seals off water backup using a float mechanism. Easy to install with just a screwdriver, this valve offers reliable, mess-free flood protection to safeguard your property from costly water damage.

## Description

【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】: 3-F 3" Float Model Flood-Guard for 3-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 3" Float Model Flood-Guard.

Review: This is the tool for the job - Everything else I could find for this size range is simply not performing up to the expected degree. This one does the job and does the job well
Review: Perfect fit - Works great, both blocking water backup and smell.

## 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】: 3-F 3" Float Model Flood-Guard for 3-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 3" Float Model Flood-Guard.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09HXPLT95 |
| Best Sellers Rank | #451,032 in Home Improvement ( See Top 100 in Home Improvement ) #8,298 in Drain Strainers |
| Brand | Minimprover |
| Brand Name | Minimprover |
| Connector Type | Threaded |
| Country of Publication | USA |
| Customer Reviews | 4.1 out of 5 stars 376 Reviews |
| Exterior Finish | Brass |
| Inlet Connection Size | 3 Inches |
| Inlet Connection Type | FNPT |
| Manufacturer | Minimprover |
| Manufacturer Part Number | H087-3 |
| Material | Brass |
| Material Type | Brass |
| Model Number | H087-3 |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Ports | 3 |
| Outlet Connection Size | 3 Inches |
| Outlet Connection Type | FNPT |
| Size | 3" Flood-Guard |
| Thread Size | NPT |
| Thread Type | Female |
| UPC | 770773110045 |
| Unit Count | 1.0 Count |
| Valve Type | check valve |

## Product Details

- **Brand:** Minimprover
- **Exterior Finish:** Brass
- **Inlet Connection Size:** 3 Inches
- **Inlet Connection Type:** FNPT
- **Manufacturer:** Minimprover
- **Material:** Brass
- **Number of Ports:** 3
- **Outlet Connection Size:** 3 Inches
- **Outlet Connection Type:** FNPT
- **UPC:** 770773110045

## Images

![Internal Backwater Valve,3-F 3" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 1](https://m.media-amazon.com/images/I/61l9DzIp9kL.jpg)
![Internal Backwater Valve,3-F 3" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 2](https://m.media-amazon.com/images/I/51jyu3MlaYL.jpg)
![Internal Backwater Valve,3-F 3" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 3](https://m.media-amazon.com/images/I/618UMumnJKL.jpg)
![Internal Backwater Valve,3-F 3" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 4](https://m.media-amazon.com/images/I/71Hl7IzsSNL.jpg)
![Internal Backwater Valve,3-F 3" Float Model Flood-Guard for 3-inch Flood Drains,Drain Backflow Preventer for Sewer Flood Protection - Image 5](https://m.media-amazon.com/images/I/61petjfN8-L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ This is the tool for the job
*by S***L on 3 July 2023*

Everything else I could find for this size range is simply not performing up to the expected degree. This one does the job and does the job well

### ⭐⭐⭐⭐⭐ Perfect fit
*by K***M on 29 July 2026*

Works great, both blocking water backup and smell.

### ⭐⭐⭐⭐⭐ Works and price was good
*by J***N on 8 September 2024*

I purchased the 3" version and it fit perfectly. I saw reviews saying they could not control the water going down. There is nothing to adjust really on this. The 4 screws around makes the rubber expand the form a solid seal inside the pipe so that it cannot just be pulled or pushed out. The middle screw should not have to be adjusted. The water goes down with weight. If you have a cup of water it will not go down so press the button and down it goes but if there is a bucket, the weight pushes it down and allows it to drain. Hope this makes sense. For me, it works perfectly and what I needed. I installed one in a garage drain and now will order a second for the laundry room drain. Depending where you are and your situation, you could use these instead of putting a main one where you will have to dig. In my case there are only two small drains in the basement so it makes sense.

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**Shop now:** [https://www.desertcart.co.il/products/764578787-internal-backwater-valve-3-f-3-float-model-flood-guard](https://www.desertcart.co.il/products/764578787-internal-backwater-valve-3-f-3-float-model-flood-guard)

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*Product available on Desertcart Israel*
*Store origin: IL*
*Last updated: 2026-08-13*