---
product_id: 214387923
title: "Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4)"
brand: "hlzc"
price: "£11.13"
currency: GBP
in_stock: true
reviews_count: 13
category: "Hlzc"
url: https://www.desertcart.co.uk/products/214387923-drain-backflow-preventer-one-way-valve-adjustable-silicone-sink-floor
store_origin: GB
region: United Kingdom
---

# Durable eco-friendly silicone Fits 1.5"-1.75" pipes One-way backflow prevention Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4)

**Brand:** hlzc
**Price:** £11.13
**Availability:** ✅ In Stock

## Summary

> 🚫💨 Stop the stink, keep the flow — your drain’s new best friend!

## Quick Answers

- **What is this?** Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4) by hlzc
- **How much does it cost?** £11.13 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/214387923-drain-backflow-preventer-one-way-valve-adjustable-silicone-sink-floor)

## Best For

- hlzc enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Freshness:** Perfect for toilets, kitchens, basements, and laundry drains; say goodbye to embarrassing odors forever.
- • **Tool-Free Installation:** Simply insert into your drain pipe—trim if needed—and enjoy immediate protection without plumbing headaches.
- • **Eco-Friendly Durability:** Crafted from premium silicone that’s flexible, stretchable, and built to last without deformation.
- • **Universal Fit, Zero Hassle:** Adjustable rings ensure seamless installation on standard pipes from 1.5" to 1.75", no guesswork needed.
- • **Odor Blocker Extraordinaire:** Automatic shut-off valve locks out sewer gases, keeping your space fresh and inviting.

## Overview

The HLZC Drain Backflow Preventer is a modern, adjustable silicone valve designed to fit standard 1.5" to 1.75" pipes. It prevents sewer gas backflow and odors with an automatic shut-off mechanism, ensuring fresh air in bathrooms, kitchens, basements, and laundry areas. Made from durable, eco-friendly silicone, it offers easy, tool-free installation and reliable long-term performance.

## Description

Product description

Review: Works great and easy to set up - One of the floor drain near the laundry area was occasionally smelling bad. I used this and the smell is gone. A also like that it doesn’t have any mechanical device which can fail in time. This is cleverly designed. Allows water to go through but blocks odors getting out.
Review: Worth it! - These things worked like a charm to keep the sewer smell from coming through my shower drain(shower over concrete floor) we could not get the trap to set right so we kept getting the smell until we found these. They last a while didn’t affect water flo or drain speed. Worth the money!

## Features

- It is suitable for standard 1 1/2” to 1 3/4" pipe. Please measure the pipes you want to use before buying to ensure that you can buy a suitable floor drain. There are two fixed rings that can meet the different needs of large and small pipes.
- The automatic shut-off design allows it to prevent odor and peculiar smell from the sewage gas; block the backflow of sewer; and it can also allow the water to easily drain.
- The installation is very simple, just put it directly into the sewer pipe. If the silicone part is too long, you can trim the flat bottom to achieve quick drainage.
- The floor drain is made of high-quality silicone, which is environmentally friendly, durable, stretchable without worrying about deformation, and super flexible.
- It is suitable for most toilets, bathrooms, kitchens, basements and washing machine sewers. After installation, you will no longer have peculiar smells in your room. Fresh air and enjoy a good life.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0895NFGCN |
| Additional Features | Adjustable |
| Best Sellers Rank | #94,049 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #371 in Kitchen Drains & Strainers |
| Brand | HLZC |
| Brand Name | HLZC |
| Color | Blue |
| Compatible Groove Diameter | 4 Centimeters |
| Customer Reviews | 4.0 out of 5 stars 757 Reviews |
| Finish Type | Brushed |
| Finish Types | Brushed |
| Global Trade Identification Number | 06221243457657 |
| Included Components | NO |
| Item Dimensions W x H | 1.77"W x 4.52"H |
| Item Weight | 200 Grams |
| Manufacturer | HLZC |
| Manufacturer Part Number | 4 |
| Material | Silicone |
| Material Type | Silicone |
| Model Number | 4 |
| Number of Items | 10 |
| Product Dimensions | 1.77"W x 4.52"H |
| Product Style | Modern |
| Special Feature | Adjustable |
| Unit Count | 4.0 Count |

## Product Details

- **Brand:** HLZC
- **Color:** Blue
- **Finish Type:** Brushed
- **Material:** Silicone
- **Product Dimensions:** 1.77"W x 4.52"H

## Images

![Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4) - Image 1](https://m.media-amazon.com/images/I/61HyIDV3eIS.jpg)
![Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4) - Image 2](https://m.media-amazon.com/images/I/51GCnzX2OKS.jpg)
![Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4) - Image 3](https://m.media-amazon.com/images/I/61Rf+niohxS.jpg)
![Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4) - Image 4](https://m.media-amazon.com/images/I/51UMs+KL4OS.jpg)
![Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4) - Image 5](https://m.media-amazon.com/images/I/51h7fts2xjS.jpg)

## Available Options

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

## Questions & Answers

**Q: Would this be effective for a vent Backdraft. Would it flap and be noisy with air pushed through it?**
A: I think this should not be effective for a vent Backdraft. Of course you can also try it.

**Q: Does this fit standard US sink drains and showers ?**
A: Hello, you need to measure the opening of your drains. This fits 1 1/2" to 1 3/4" drain opening.

**Q: Will this stop water backflow?**
A: The bottom of this floor drain is closed, which can stop water backflow

**Q: How much air pressure does it take to activate airflow for waterless checkvalve vent?**
A: It needs normal or mild air pressure.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great and easy to set up
*by J***U on April 28, 2026*

One of the floor drain near the laundry area was occasionally smelling bad. I used this and the smell is gone. A also like that it doesn’t have any mechanical device which can fail in time. This is cleverly designed. Allows water to go through but blocks odors getting out.

### ⭐⭐⭐⭐⭐ Worth it!
*by T***E on April 3, 2026*

These things worked like a charm to keep the sewer smell from coming through my shower drain(shower over concrete floor) we could not get the trap to set right so we kept getting the smell until we found these. They last a while didn’t affect water flo or drain speed. Worth the money!

### ⭐⭐⭐⭐ Returned item, didn’t work for my application.
*by O***Y on July 13, 2025*

I attempted to use this product in a sink drain pipe with an air conditioner condensation line offset . Just didn’t fit well. These might be better suited for drain pipes that don’t have a condensation line offset, but for my application, they just didn’t work well. I may reconsider them for my RV one day to prevent grey water tank smells from entering the camper. These are well made and do provide a tight compression seal.

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**Shop now:** [https://www.desertcart.co.uk/products/214387923-drain-backflow-preventer-one-way-valve-adjustable-silicone-sink-floor](https://www.desertcart.co.uk/products/214387923-drain-backflow-preventer-one-way-valve-adjustable-silicone-sink-floor)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-06-02*