Brass Floor Drain Valve – Odor Block & Backflow Preventer

Keep Your Home Fresh with This Brass Floor Drain Core

Upgrade your kitchen, bathroom, or laundry floor drain with this durable brass floor drain valve. Engineered with a gravity-activated 90° open/close mechanism and a thickened silicone liner, it creates a reliable seal that blocks unpleasant sewer odors and prevents wastewater backflow — keeping your indoor spaces dry, clean, and fresh-smelling.

Key Features

• Gravity-Operated Drainage: The 90° open/close gravity structure allows fast, efficient water flow without any moving parts to wear out.
• Odor-Blocking Silicone Seal: A thickened silicone liner creates an airtight water seal (120 mm height) that stops sewer gases from entering your home.
• Backflow Prevention: Built-in valve design prevents wastewater from flowing back up through the drain.
• Hair & Debris Filter Basket: The detachable grille filter basket catches hair, lint, and debris before they enter the drain pipe — easy to remove and clean.
• Quick Plug-and-Play Installation: Simply insert into any floor drain with a 36–39 mm aperture. No tools or plumbing experience required.
• Premium Mixed-Material Build: Combines a PC rubber body, copper ring, and plastic filter for long-lasting durability and leak resistance.
• Versatile Use: Ideal for kitchens, bathrooms, toilets, basements, garages, and laundry rooms.

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
• Country of Origin: Made in China

Package Includes

• 1 × Floor Drain Core / Valve Insert

Why Upgrade Your Floor Drain?

Standard floor drains often lack an effective seal, allowing sewer gases and backflow to compromise indoor air quality. A proper floor drain valve with a water seal is a simple, affordable solution recommended by plumbing professionals. Learn more about household drain maintenance and indoor air quality at the EPA Indoor Air Quality resource.

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Frequently Asked Questions

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

A: This floor drain core is designed to fit floor drains with an inner aperture of 36–39 mm. Please measure your drain opening before purchasing to ensure a proper fit.

Q: How does the odor-blocking mechanism work?

A: The valve uses a 120 mm water seal height combined with a thickened silicone liner. The water trapped in the seal creates a physical barrier that prevents sewer gases from rising through the drain, effectively blocking unpleasant odors from entering your living space.

Q: Is this drain valve easy to install?

A: Yes! Installation is completely tool-free — it's a simple plug-and-play design. Just insert the valve core into your existing floor drain opening. The filter basket is also detachable for quick and easy cleaning.

Q: Can this valve prevent wastewater backflow?

A: Yes. The gravity-operated 90° open/close mechanism functions as a backflow preventer. When there is no water flow, the valve closes to stop wastewater from flowing back up through the drain pipe.