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

175 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered 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 Poland.

Secure transaction

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	227,233 in DIY & Tools ( See Top 100 in DIY & Tools ) 673 in Bathroom Sink Taps
Brand Name	HLZC
Colour	Blue
Compatible Groove Diameter	4 Centimeters
Customer Reviews	4.0 4.0 out of 5 stars (740)
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 Type	Silicone
Model Number	4
Number of Items	10
Number of Packs	4
Product Style	Modern
Special Features	Adjustable
Unit Count	4.0 count

Common Questions

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Suresh K.

Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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175 zł

Duties & taxes included

In stock

Sold byAmazon PolandDelivered 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 Poland.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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