---
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: "€ 24.14"
currency: EUR
in_stock: true
reviews_count: 13
category: "Hlzc"
url: https://www.desertcart.fr/products/214387923-drain-backflow-preventer-one-way-valve-adjustable-silicone-sink-floor
store_origin: FR
region: France
---

# Eco-friendly durable 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:** € 24.14
**Availability:** ✅ In Stock

## Summary

> 🚫💨 Say goodbye to sewer stench, hello to fresh vibes!

## 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?** € 24.14 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fr](https://www.desertcart.fr/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

- • **Cut-to-Size Convenience:** Trim the silicone base for perfect drainage speed without compromising protection.
- • **Universal Fit, Zero Hassle:** Adjustable rings fit standard 1.5" to 1.75" pipes for seamless installation.
- • **Odor Blocker Extraordinaire:** Automatic shut-off valve stops sewer gases dead in their tracks—breathe fresh, live fresh.
- • **Built to Last, Built for Life:** Premium stretchable silicone resists deformation and lasts through daily wear.
- • **Effortless Installation, Instant Relief:** Simply insert into your drain—no tools, no fuss, just fresh air and peace of mind.

## Overview

The HLZC Drain Backflow Preventer is an adjustable silicone one-way valve designed to fit standard 1.5" to 1.75" pipes. It effectively blocks sewer gas backflow and odors with an automatic shut-off mechanism, while allowing water to drain smoothly. Made from durable, eco-friendly silicone, it’s easy to install and customizable by trimming for optimal drainage. Ideal for toilets, kitchens, bathrooms, and basements, it transforms your space by eliminating unpleasant smells and enhancing air quality.

## Description

HLZC Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4) - desertcart.com

Review: Wish I found these long ago. - For years I have been plagued by sewer odors, they were coming from by basement drain. Every day or two, I had to pour water in the drain to block the gas, in the summer time it wasn’t as bad as it is when there is less humidity and the dehumidifier is not working much, at least then water is going into the drain and helping. It was so bad, without water in the drain, I could hold my hand over the drain and feel the air coming out. Today I got these and immediately went to the basement, popped one of those in and immediately the odor stopped. I poured water in and it passed through and closed up blocking the gas from coming through. I am ecstatic ! It was always an embarrassment to have someone come to the house and we’d have to offer an apology and an explanation. No more, no worries. I’ve no idea how long these will last, so I’m going to buy more, they are well worth the money.
Review: Does the trick - I have a 1 1/4" shower drain with no p-trap so odor was coming back from the septic. It's set in a concrete slab so not much I could do to fix it. I dropped one of these in. At first it drained very slowly, and then not at all. I pulled it and reinsert it and now it drains great. It seems to have stopped the odor. Inexpensive solution. We'll see how long it lasts. Very happy!

## 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 |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #144,425 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #614 in Kitchen Drains & Strainers |
| Brand | HLZC |
| Color | Blue |
| Customer Reviews | 4.0 4.0 out of 5 stars (746) |
| Date First Available | May 14, 2020 |
| Finish | Brushed |
| Finish Type | Brushed |
| Global Trade Identification Number | 06221243457657 |
| Included Components | NO |
| Item Package Quantity | 1 |
| Item Weight | 7.1 ounces |
| Item model number | 4 |
| Manufacturer | HLZC |
| Material | Silicone |
| Number of Items | 10 |
| Part Number | 4 |
| Product Dimensions | 1.77"W x 4.52"H |
| Special Feature | Adjustable |
| Special Features | Adjustable |
| Style | Modern |

## 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)

## 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

### ⭐⭐⭐⭐⭐ Wish I found these long ago.
*by J***O on October 19, 2024*

For years I have been plagued by sewer odors, they were coming from by basement drain. Every day or two, I had to pour water in the drain to block the gas, in the summer time it wasn’t as bad as it is when there is less humidity and the dehumidifier is not working much, at least then water is going into the drain and helping. It was so bad, without water in the drain, I could hold my hand over the drain and feel the air coming out. Today I got these and immediately went to the basement, popped one of those in and immediately the odor stopped. I poured water in and it passed through and closed up blocking the gas from coming through. I am ecstatic ! It was always an embarrassment to have someone come to the house and we’d have to offer an apology and an explanation. No more, no worries. I’ve no idea how long these will last, so I’m going to buy more, they are well worth the money.

### ⭐⭐⭐⭐⭐ Does the trick
*by C***K on May 17, 2023*

I have a 1 1/4" shower drain with no p-trap so odor was coming back from the septic. It's set in a concrete slab so not much I could do to fix it. I dropped one of these in. At first it drained very slowly, and then not at all. I pulled it and reinsert it and now it drains great. It seems to have stopped the odor. Inexpensive solution. We'll see how long it lasts. Very happy!

### ⭐⭐⭐⭐ Review
*by J***I on February 24, 2026*

Excelente productos, tenía maños olores en mi baños y esto fue la maravilla fácil de instalar y los olores desaparecieron

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---

*Product available on Desertcart France*
*Store origin: FR*
*Last updated: 2026-03-09*