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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Yikuo 4 Pieces Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen

Yikuo 4 Pieces Drain Backflow Preventer, One Way Valve, Adjustable Silicone Sink Floor Drain Trap for Pipes Tubes in Toilet Bathroom Kitchen

Product ID: 679991391

Details

Brand
HLZC
Colour
Blue
Material
Silicone
Finish Type
Silicone
Special Feature
Adjustable

💧Ensures smooth water drainage

✂️Trim-to-fit silicone design

🛠️Fits 1.5"-2" pipes

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7477 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚿 Keep your drains fresh and flowing—because your home deserves the best!

CUSTOMIZABLE LENGTH - Trim the silicone base for a perfect fit and faster drainage.
COMPLETE 4 PIECE SET - Equip every drain in your home—bathroom, kitchen, laundry, and basement.
EFFORTLESS INSTALLATION - No plumbing overhaul—install quickly without altering existing outlets.
ODOR BLOCKING SILICONE SEAL - Keeps unwanted smells out while letting water flow effortlessly.
UNIVERSAL FIT FOR STANDARD PIPES - Seamlessly compatible with 1.5 to 2-inch drain pipes—no guesswork needed.

The Yikuo 4 Pieces Drain Backflow Preventer is a modern, adjustable silicone valve designed to fit standard 1.5 to 2-inch pipes. It prevents odors from escaping while allowing smooth water drainage. Easy to install without modifying existing plumbing, its trim-to-fit silicone base ensures a perfect, customizable fit. Ideal for multiple floor drains including bathrooms, kitchens, and basements, this set includes four valves with enlarge and retainer rings for secure placement.

Specifications

ASIN	B0895NFGCN
Brand	HLZC
Colour	Blue
Customer Reviews	3.9 out of 5 stars 539 Reviews
Enclosure Material	Silicone
Finish Type	Silicone
Finish Types	Silicone
Global Trade Identification Number	06221243457657
Item Weight	200 Grams
Manufacturer	yikuo
Manufacturer Part Number	4
Material	Silicone
Model number	4
Number of Items	4
Product Features	Adjustable
Product Style	Modern
Special Feature	Adjustable
Style	Modern

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

K**E

Gute und wirksame Lösung für Rückstau

War die einzige wirklich gute Lösung für einen Duschwannenabfluss, bei dem es gelegentlich Rückstau durch gleichzeites Leeren der badewanne gab.

10.03.2025

J**A

Unsatisfied Product

Product is not suitable in my drainage

1.05.2025

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