---
product_id: 652960392
title: "2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection"
brand: "threlaco"
price: "HK$3"
currency: HKD
in_stock: false
reviews_count: 5
url: https://www.desertcart.hk/products/652960392-2-pcs-internal-backwater-valve-2-inch-float-guard-backflow
store_origin: HK
region: Hong Kong
---

# 2-inch size fits standard flood drains perfectly 2 valves per pack for double the protection Solid brass build for corrosion resistance 2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection

**Brand:** threlaco
**Price:** HK$3
**Availability:** ❌ Out of Stock

## Summary

> 🛡️ Protect your home like a pro—because floods don’t wait!

## Quick Answers

- **What is this?** 2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection by threlaco
- **How much does it cost?** HK$3 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/652960392-2-pcs-internal-backwater-valve-2-inch-float-guard-backflow)

## Best For

- threlaco enthusiasts

## Why This Product

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

## Key Features

- • **Plug & Play Installation:** User-friendly design lets you install in minutes with just a screwdriver—no plumbing pro needed.
- • **Peace of Mind Flood Protection:** Keep your property safe from sewage and water backflow, reducing costly damage and cleanup stress.
- • **Built to Last with Brass & Rubber:** Durable solid brass construction paired with molded rubber gaskets ensures long-term corrosion resistance and leak-proof sealing.
- • **Precision Float Sensor Technology:** Advanced float guard mechanism guarantees sensitive, reliable backflow prevention every time.
- • **Double the Defense, Double the Value:** Two premium backwater valves in one pack to safeguard multiple drains effortlessly.

## Overview

This 2-pack of 2-inch internal backwater valves features solid brass construction and molded rubber gaskets for superior durability and corrosion resistance. Designed for easy installation with a screwdriver, these valves use advanced float sensor technology to reliably prevent water and sewage backflow, protecting your flood drains and property from damage. Ideal for standard pipelines, they combine high operational efficiency with user-friendly setup, making flood protection accessible and effective.

## Description

Features: Our drain backflow preventer comes in eye catching shades of yellow and black. Besides serving a practical purpose, they emerge as a stylish addition to your functional toolkit. Step into the world of remarkable strength and quality with our 2 inch backwater valve made from brass. The molded rubber embedded within is not only durable but also ensures solidity that brings about efficient performance.  Specifications: Material: brass, molded rubber Color: yellow, black Size: about 2 inches  Package includes: 2 x Internal backwater valves  Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays.

## Features

- Double the Convenience: every package includes 2 internal backwater valves; This means you can handle twice the tasks with the same quality results, promising excellent value for your investment; The main parts are made of solid brass, sturdy and corrosion resistant, and the gasket is made of molded rubber, soft and reliable
- Product Dimensions: the backflow valve is suitable for 2 inch flood drains, making them the ideal size to suit the standard setups and pipelines; They snugly fit your system ensuring there are no slips or drawbacks, making your installations trouble free
- User Friendly Installation: our 2 inch float flood guard scores high on the ease of installation, it only takes a screwdriver and a few minutes to install; The user friendly design allows even the newbies to fix them without any hassle, saving your time and resources; It can prevent property damage and troublesome clean up work
- Efficient Backflow Prevention: preventing backflow is one of the features of our backflow preventer; It can prevent backflow of water, prevent backflow of sewage, thus protecting the main pipe and equipment; With this, you can ensure the cleanliness and safety of your water, preventing unwanted stress and worries
- High Operational Efficiency: our backwater valve has high efficiency, well designed, advanced in structure, sensitive in opening and closing, stable and reliable in operation; It provides optimal performance in each use; Regardless of how frequently you use it, you can trust its effectiveness

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Sensor Technology | Float Sensor |
| Manufacturer | Threlaco |
| Item Weight | 9.5 ounces |
| Product Dimensions | 2 x 2 x 2 inches |
| Size | about 2 inches |
| Item Package Quantity | 2 |
| Included Components | 2 x Internal backwater valves |
| Batteries Required? | No |

## Product Details

- **Color:** yellow, black
- **Brand:** Threlaco
- **Product Dimensions:** 2"L x 2"W x 2"H
- **Control Method:** Touch
- **Mounting Type:** Flush Mount

## Images

![2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection - Image 1](https://m.media-amazon.com/images/I/81GfZdH7d4L.jpg)
![2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection - Image 2](https://m.media-amazon.com/images/I/81Ik1cyYfIL.jpg)
![2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection - Image 3](https://m.media-amazon.com/images/I/81Fc3Ne81VL.jpg)
![2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection - Image 4](https://m.media-amazon.com/images/I/81K1VvZMLbL.jpg)
![2 Pcs Internal Backwater Valve 2 Inch Float Guard Backflow Preventer for Flood Drains, Sewer Protection - Image 5](https://m.media-amazon.com/images/I/71Ssd-LJTAL.jpg)

## Customer Reviews

### ⭐ Will not allow draining
*by 1***L on March 27, 2025*

Does not work. added this to my basement shower. Water will not drain completely. Scratching my head trying to understand this engineering.

### ⭐ O ring
*by V***O on February 7, 2025*

Even though it says, it’s for 2 inch pipe it just doesn’t fit in very well and it’s too tight

### ⭐⭐⭐⭐⭐ Plug and play
*by T***P on October 14, 2024*

Had an occasional issue with a floor drain backing up. Installed easilly and tested with a pail of water and works as intended. Now I can rest easier knowing this will prevent flooding.

## Frequently Bought Together

- Threlaco 2 Pcs Internal Backwater Valve 2 Inch Float Flood Guard Backflow Valve Backflow Preventer for Flood Drains, Sewer Flood Protection
- General Specialties Flood-Guard for 2" Flood Drains
- General Pipe Cleaners 3F 3" Float Model Flood Guard, Small, Black

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**Shop now:** [https://www.desertcart.hk/products/652960392-2-pcs-internal-backwater-valve-2-inch-float-guard-backflow](https://www.desertcart.hk/products/652960392-2-pcs-internal-backwater-valve-2-inch-float-guard-backflow)

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*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-01-22*