Kitchen Range Hood Check Valve 150/160/180mm Anti-Odor Vent

Kitchen Range Hood Check Valve – Anti-Odor Ventilation Damper

Keep cooking odors, backdrafts, and stale air out of your kitchen and bathroom with this high-performance Check Valve for Range Hoods and Inline Ducting. Designed to fit 150mm, 160mm, and 180mm round duct pipes, this transparent PVC damper shutter works electricity-free — opening automatically when air flows out and sealing shut when the fan is off, preventing reverse airflow and unwanted smells from entering your living space.

Whether you're upgrading your kitchen exhaust system, bathroom ventilation, or inline ducting setup, this versatile check valve delivers a reliable, long-lasting seal with minimal maintenance. Made in Mainland China.

Key Features

• Transparent Valve Body: Fully clear design lets you visually confirm correct operation at a glance — no guesswork required.
• Dual-Leaf Flap Design: Upgraded twin-page opening mechanism opens faster and allows more efficient airflow than traditional single-flap designs.
• Anti-Oil Silicone Gasket: Soft silicone washers create a strong, smoke-tight seal, blocking cooking odors and fumes from flowing back into your home.
• Spring-Assisted Closure: Built-in spring mechanism ensures a firm, lasting seal every time the fan shuts off — no sagging or deformation over time.
• High-Temperature & Flame-Retardant Material: Constructed from durable PVC/PC thermoplastic resin with superior compressive toughness and high-temperature resistance — outperforming standard ABS plastic.
• Electricity-Free Operation: Passive design requires no wiring or power source; activates purely by airflow pressure.
• 3 Flexible Installation Styles:
  • Style A (Double-Ended): Connects aluminum foil tube with inner diameter 150mm, 160mm, 170mm, or 180mm.
  • Style B (Double-Ended): Connects PVC pipe with outer diameter of 160mm or 180mm.
  • Style C (Mixed-End): One end outer diameter 160mm or 180mm PVC pipe; other end inner diameter 150mm, 160mm, 170mm, or 180mm.

Specifications

Note: Manual measurement may result in a ±1–3cm variance. Colors may vary slightly between monitors and actual product.

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Learn More About Home Ventilation

Proper kitchen and bathroom ventilation is essential for indoor air quality and moisture control. The U.S. Environmental Protection Agency (EPA) – Indoor Air Quality provides guidance on effective ventilation strategies for healthier homes.

Frequently Asked Questions

Q: What pipe sizes does this kitchen range hood check valve support?

A: This check valve is compatible with round ducts and pipes with inner diameters of 150mm, 160mm, 170mm, and 180mm, as well as PVC pipes with outer diameters of 160mm and 180mm, depending on your chosen installation style (A, B, or C).

Q: Does this check valve require electricity or wiring to operate?

A: No — this is a completely passive, electricity-free device. It opens automatically when your range hood or exhaust fan pushes air through, and springs shut when airflow stops, preventing backdrafts and odors from re-entering your home without any electrical connection.

Q: How does this check valve prevent cooking odors from coming back?

A: The valve uses a spring-assisted dual-leaf flap combined with a soft silicone gasket seal. When your range hood is off, the flaps close firmly and the gasket creates an airtight barrier, stopping odors and fumes in the ductwork from flowing back into your kitchen or bathroom.

Q: Is this check valve suitable for high-temperature kitchen environments?

A: Yes. The valve is manufactured from PC/PVC thermoplastic resin, which offers strong compressive toughness, high-temperature resistance, and flame-retardant properties — making it well-suited for the heat and humidity of kitchen exhaust systems.