Kitchen Range Hood Check Valve & Backdraft Damper

Prevent unwanted cooking odors, sewer gas, cold drafts, and pests from entering your kitchen through the exhaust duct with a high-temperature range hood check valve. Our kitchen range hood check valve and backdraft damper creates a reliable one-way air seal for home ventilation systems. Engineered with dual spring-loaded damper flaps, the valve opens smoothly under exhaust fan pressure to vent smoke and grease, then snaps shut to form an airtight seal when airflow stops. The heat-resistant ABS body withstands high cooking temperatures and grease buildup without warping, melting, or sticking shut over time. Featuring a multi-size stepped duct adapter with an integrated silicone sealing gasket, this backdraft stopper installs cleanly onto flexible aluminum foil ducts or rigid PVC exhaust pipes. Safeguard your kitchen air quality with an anti-odor check valve and exhaust duct backdraft damper designed for versatile duct installation.

Key Features

• Dual spring-loaded gravity flaps open fully for exhaust and seal shut to prevent backdrafts.

• Multi-size step adapter fits flexible foil ducts and rigid PVC pipes in standard exhaust sizes.

• Heat-resistant and flame-retardant ABS construction resists grease accumulation and high exhaust heat.

• Soft silicone sealing ring creates an airtight, leak-proof barrier against cooking odors, drafts, and pests.

Why Choose Our Kitchen Range Hood Check Valve & Backdraft Damper Say goodbye to lingering cooking smells from neighboring apartments, persistent chimney drafts, and unwanted insects creeping down your exhaust duct. Unlike flimsy single-flap dampers that rattle in the wind or get stuck open with grease, this double-leaf spring damper provides firm, positive closure every time the fan turns off. Its versatile adapter housing eliminates the need for messy duct tape or custom adapters during installation.

Perfect For

• Preventing backdraft odors and cold air leakage in kitchen range hoods, bathroom exhaust fans, and inline duct systems.

• Blocking pests, dust, and outdoor breezes from entering home exhaust ventilation ducts.

• Homeowners, renovators, and HVAC technicians seeking a durable kitchen exhaust pipe check valve damper.

📋 Product Specifications