Would this be effective for a vent Backdraft. Would it flap and be noisy with air pushed through it?

I think this should not be effective for a vent Backdraft. Of course you can also try it.

Does this fit standard US sink drains and showers ?

Hello, you need to measure the opening of your drains. This fits 1 1/2" to 1 3/4" drain opening.

Will this stop water backflow?

The bottom of this floor drain is closed, which can stop water backflow

How much air pressure does it take to activate airflow for waterless checkvalve vent?

It needs normal or mild air pressure.

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

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

Product ID: 242079799

Details

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

🌀Flexible, durable silicone

🔧Fits 1.5"–1.75" pipes

🛡️Backflow & odor prevention

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$121.42

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In stock

Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚿 Seal the deal on freshness—never let backflow cramp your style!

PLUG PLAY INSTALLATION - No tools, no fuss—just insert and trim for a flawless fit in minutes.
VERSATILE HOME ESSENTIAL - Ideal for bathrooms, kitchens, basements, and laundry—say goodbye to unpleasant smells everywhere.
UNIVERSAL FIT ZERO HASSLE - Adjustable rings ensure perfect seal for 1.5" to 1.75" pipes—no guesswork needed.
ODOR BLOCKER EXTRAORDINAIRE - Automatic shut-off design locks out sewer gases, keeping your space fresh and inviting.
SILICONE STRENGTH MEETS FLEXIBILITY - Eco-friendly, stretchable silicone resists deformation and adapts to your drain’s shape.

The HLZC Drain Backflow Preventer is a high-quality, 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, while its flexible, durable silicone construction ensures long-lasting performance. Easy to install with included rings and trim-to-fit design, it’s perfect for bathrooms, kitchens, basements, and laundry areas seeking a fresh, odor-free environment.

Specifications

ASIN	B0895NFGCN
Best Sellers Rank	316,796 in DIY & Tools ( See Top 100 in DIY & Tools ) 889 in Bathroom Sink Taps
Brand	HLZC
Brand Name	HLZC
Colour	Blue
Compatible Groove Diameter	4 Centimeters
Customer Reviews	4.0 out of 5 stars 729 Reviews
Finish Type	Brushed
Finish type	Brushed
Global Trade Identification Number	06221243457657
Included Components	NO
Item Dimensions W x H	45W x 115H millimetres
Item Weight	200 Grams
Manufacturer	HLZC
Manufacturer Part Number	4
Material	Silicone
Material Type	Silicone
Model Number	4
Number of Items	10
Product Style	Modern
Product dimensions	45W x 115H millimetres
Special Features	Adjustable
Special feature	Adjustable
Unit Count	4.0 count

Reviews

E**.

Es muy fácil de instalar y hasta ahora cumple muy bien su función

Se instala muy rápido

3.11.2022

F**N

bon

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.

12.10.2025

A**M

حلوة

ممتازة كجودة

12.10.2025

P**I

Facil de usar

se quedó bien y el ollor se pasó!

31.05.2021

J**O

Sirvió a la perfección

Me funcionó estupendamente

17.07.2022

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$121.42

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In stock

Sold byAmazon EcuadorDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Ecuador.

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TrustScore 4.5 | 7,300+ reviews

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