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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🚿 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.

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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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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Brand	HLZC
Colour	Blue
Material	Silicone
Finish Type	Silicone
Special Feature	Adjustable
Style	Modern
Number of Items	4
Manufacturer	yikuo
Global Trade Identification Number	06221243457657
Item model number	4
Product Dimensions	4.5 x 4.5 x 11.48 cm; 200 g
ASIN	B0895NFGCN

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

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