Odor-Proof Floor Drain Valve & Backflow Preventer – Kitchen & Bath

Keep Your Home Fresh & Dry with This Odor-Proof Floor Drain Valve

Say goodbye to unpleasant sewer smells creeping into your home! This Odor-Proof Floor Drain Valve (Sewer Core Backflow Preventer) is a smart, plug-and-play upgrade for any floor drain in your kitchen, bathroom, toilet, basement, garage, or laundry room. Engineered with a gravity-operated 90° open/close mechanism and a thickened silicone liner, it ensures fast, efficient drainage while sealing out odors and blocking backflow — all without any tools or complicated installation.

Key Features

• Gravity-Operated 90° Valve: Opens automatically when water flows through and closes tightly when dry, preventing sewer gases and backflow from entering your space.
• Thickened Silicone Liner: Forms a leak-proof, airtight seal that effectively blocks odors, keeping your indoor environment fresh and clean.
• Detachable Hair & Debris Filter Basket: The built-in grille filter catches hair, lint, and other foreign objects before they clog your drain. Easily removable for quick cleaning.
• Large Outlet Design: Maximizes drainage speed, keeping floors dry and preventing water buildup.
• Wide Compatibility: Fits floor drain apertures of 36–39 mm — ideal for most standard drains in kitchens, bathrooms, toilets, basements, garages, and laundry rooms.
• Durable Materials: Constructed from PC rubber, a copper ring, and a plastic filter for long-lasting performance and corrosion resistance.
• 120 mm Water Seal Height: Provides a deep water seal barrier for superior odor blocking.
• Plug & Play Installation: No tools, no adhesives — simply insert into your existing floor drain and it's ready to use.

Specifications

• Product Name: Deodorant Floor Drain Core / Sewer Core Backflow Preventer
• Material: PC Rubber / Copper Ring / Plastic Filter
• Drainage Type: Gravity Straight Flow
• Water Seal Height: 120 mm
• Fit Aperture: 36–39 mm
• Installation: Plug and Play (no tools required)
• Country of Origin: Made in China

What's in the Box?

• 1 × Floor Drain Core (Sewer Backflow Preventer)

Where Can It Be Used?

This versatile drain valve is perfect for virtually any room with a floor drain:

• Bathroom & Shower
• Kitchen
• Toilet Room
• Basement & Garage
• Laundry Room

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• Thick Memory Sponge Non-Slip Floor Mat for Bathroom & Kitchen

Learn more: EPA Safer Choice cleaning product guidance

Frequently Asked Questions

Q: What drain aperture size does this floor drain valve fit?

A: This odor-proof floor drain valve is designed to fit drain apertures between 36 and 39 mm. We recommend measuring your existing floor drain opening before purchasing to ensure compatibility.

Q: How does the backflow preventer stop sewer odors?

A: The valve uses a gravity-operated 90° open/close mechanism combined with a thickened silicone liner and a 120 mm water seal. When no water is flowing, the valve closes tightly, sealing off sewer gases and preventing odors from entering your home.

Q: Is this floor drain core easy to install?

A: Absolutely! This is a true plug-and-play solution — no tools, no special skills, and no adhesives are needed. Simply insert the drain core into your existing floor drain opening and it's ready to use right away.

Q: Can I clean the filter basket, and how?

A: Yes! The filter basket is fully detachable, making it easy to remove, rinse under running water, and reinsert. Regular cleaning helps maintain optimal drainage speed and hygiene.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.