Brass Floor Drain Valve Core – Odor Seal & Backflow Preventer

Keep Your Home Fresh with Our Brass Floor Drain Core

Say goodbye to unpleasant sewer gases and standing water! This Odor-Proof Floor Drain Valve Core is engineered to seal out sewer gases, block backflow, and filter debris — all while maintaining fast, efficient drainage. Ideal for kitchens, bathrooms, toilets, basements, garages, and laundry rooms, this plug-and-play drain insert is one of the simplest home upgrades you can make.

Made in Mainland China.

Key Features

• Gravity-Activated 90° Valve: Opens automatically when water flows and closes tightly when dry, keeping sewer gases sealed out at all times.
• Thickened Silicone Liner: Creates a leak-proof, airtight seal to block unpleasant odors from rising through the drain.
• Built-In Grille Filter Basket: Catches hair, debris, and foreign objects before they enter the drain — detachable for easy cleaning.
• Large Outlet Design: Maximizes drainage speed to keep your floors dry and your indoor environment fresh.
• Backflow Prevention: Stops wastewater from reversing back into your space during pressure fluctuations.
• Plug-and-Play Installation: No tools required — simply insert into floor drains with an aperture of 36–39 mm.
• Durable Materials: Constructed from PC rubber, a copper ring, and a plastic filter for long-lasting performance.

Specifications

• Material: PC Rubber / Copper Ring / Plastic Filter
• Drainage Type: Gravity Straight Row
• Water Seal Height: 120 mm
• Compatible Drain Aperture: 36–39 mm
• Floor Drain Method: Deodorization Type
• Application: Kitchen, Bathroom, Toilet, Basement, Garage, Laundry Room
• Installation: Plug and play — no tools needed
• Origin: Made in Mainland China

What's in the Box

• 1 × Floor Drain Core / Valve Insert

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Further Reading

For tips on maintaining healthy home plumbing and indoor air quality, visit the U.S. EPA Indoor Air Quality resource page.

Frequently Asked Questions

Q: What drain sizes is this floor drain valve compatible with?

A: This floor drain core is designed for drains with an inner aperture of 36–39 mm. It's a plug-and-play fit — simply insert it into the drain hole with no tools required.

Q: How does the odor-seal mechanism work?

A: The valve uses a gravity-activated 90-degree opening and closing system. When water drains, the valve opens freely. When dry, it closes tightly — with a thickened silicone liner creating an airtight seal that prevents sewer gases from entering your home.

Q: Can this drain valve prevent backflow?

A: Yes! The valve's gravity-closing design acts as a one-way gate, preventing wastewater from flowing back up through the drain during pressure changes or heavy use in connected pipes.

Q: Is it easy to clean the filter basket?

A: Absolutely. The grille filter basket is fully detachable, making it simple to remove, rinse, and replace. Regular cleaning ensures optimal drainage and odor control.

Q: Where can this drain insert be used?

A: This versatile drain core works in kitchens, bathrooms, showers, toilets, basements, garages, and laundry rooms — anywhere you have a standard floor drain in the 36–39 mm size range.