---
product_id: 242079799
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: "฿3975"
currency: THB
in_stock: true
reviews_count: 5
category: "Hlzc"
url: https://www.desertcart.co.th/products/242079799-drain-backflow-preventer-one-way-valve-adjustable-silicone-sink-floor
store_origin: TH
region: Thailand
---

# Eco-friendly durable silicone Fits 1.5"–1.75" pipes Backflow & odor blocker Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen (Blue-4)

**Brand:** hlzc
**Price:** ฿3975
**Availability:** ✅ In Stock

## Summary

> 🚿 Seal the deal on freshness and say goodbye to backflow blues!

## 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?** ฿3975 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/242079799-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

- • **Plug & Play Installation:** No tools, no fuss—just insert and trim if needed for a flawless fit and fast drainage.
- • **Versatile Home Essential:** Perfect for toilets, kitchens, basements, and laundry drains—your all-in-one defense against backflow and bad smells.
- • **Universal Fit, Zero Hassle:** Adjustable rings ensure perfect seal for standard pipes from 1.5" to 1.75", no guesswork needed.
- • **Built to Last, Built for Life:** Premium stretchable silicone resists deformation and lasts through years of daily use.
- • **Odor? Blocked. Freshness? Unlocked.:** Automatic shut-off valve stops sewer gases dead in their tracks, keeping your space smelling pristine.

## Overview

This adjustable silicone drain backflow preventer fits standard 1.5" to 1.75" pipes with included rings for a secure fit. Its automatic shut-off design blocks sewer gas odors and backflow while allowing smooth drainage. Made from durable, eco-friendly silicone, it installs easily without tools and suits multiple drain types in bathrooms, kitchens, basements, and laundry areas.

## Description

How to install it? Installation is very simple. Plug and play. Where can it be installed? It can be installed in floor drains or sewer pipes. For example: shower drain, basement drain, bathroom sink, kitchen sink, bathtub drain, laundry floor drain or sewer pipe, etc. Can it be installed in a 1.75-inch diameter ABS pipe? Of course. It is suitable for standard 1 1/2” to 1 3/4" pipe. Is it possible to fall into the sewer? It comes with a plastic enlarge adapter and a plastic retainer ring. If there is a gap after installation, you can also use Teflon tape to fix it in place. So please don't worry, there will be no risk of falling. Installation Guide: 1. Please measure precisely the internal diameter of drain opening, in case any inconvenience brought by unmatched size. 2. Because the stickiness and softness feature of silicone, make sure support apart the open of drain grate with your hands in the first installation for the smooth draining. Package Contains: 4 x Silicone Drain Backflow Preventer 4 x Enlarge Rings 4 x Retainer Rings

Review: Se instala muy rápido
Review: C'était un produit pour mon frère. Idéal pour lui. Ça fait le travail pour l'urinoir de son commerce. Depuis plusieurs mois qu'il a installé ce produit. Il aime. Plus d'odeur désagréable. La quantité était un peu énorme.

## 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 Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 732,528 in DIY & Tools ( See Top 100 in DIY & Tools ) 2,194 in Bathroom Sink Taps |
| Colour | Blue |
| Customer Reviews | 4.0 4.0 out of 5 stars (717) |
| Date First Available | 14 May 2020 |
| Finish | Brushed |
| Included Components | NO |
| Installation method | Floor-Mounted |
| Item Package Quantity | 1 |
| Item Weight | 200 g |
| Item model number | 4 |
| Manufacturer | HLZC |
| Material | Silicone |
| Part Number | 4 |
| Product Dimensions | 4.5 x 4.5 x 11.48 cm; 200 g |
| Special Features | Adjustable |
| Style | Modern |

## Product Details

- **Brand:** HLZC
- **Colour:** Blue
- **Finish type:** Brushed
- **Material:** Silicone
- **Product dimensions:** 45W x 115H millimetres

## 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/410zfaCKc0S.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/41JRcNkxVwS.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/41RFpD1o9LS.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/41RtVwh-yrL.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/41UaO-5oEgS.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

### ⭐⭐⭐⭐⭐ Review
*by E***. on 3 November 2022*

Se instala muy rápido

### ⭐⭐⭐⭐⭐ Review
*by F***N on 12 October 2025*

C'était un produit pour mon frère. Idéal pour lui. Ça fait le travail pour l'urinoir de son commerce. Depuis plusieurs mois qu'il a installé ce produit. Il aime. Plus d'odeur désagréable. La quantité était un peu énorme.

### ⭐⭐⭐⭐⭐ Review
*by A***M on 12 October 2025*

ممتازة كجودة

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-03*