Non Return Damper (NRD)
Heavy-duty Non Return Damper designed to prevent reverse airflow in HVAC duct systems. Automatic operation, corrosion-resistant, and suitable for both supply and exhaust ducts.
Description
The Non Return Damper is an essential HVAC component used to prevent backflow of air in duct systems. It operates automatically — allowing air to flow in one direction while blocking reverse airflow. Constructed from galvanized steel or aluminum, the NRD ensures durability, low leakage, and efficient airflow control. Its lightweight flap design makes it suitable for installation in supply and exhaust air ducts of commercial, industrial, and residential projects.
Key Features:
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🔒 Prevents reverse airflow in HVAC ducts
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🌬️ Ensures one-way air circulation with automatic flap action
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🛡️ Galvanized steel/aluminum construction for durability
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⚙️ Available in gravity-operated or spring-loaded models
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📏 Multiple standard sizes to suit duct dimensions
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🧩 Compact, lightweight, and maintenance-free
Applications:
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🏭 Industrial HVAC systems
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🏢 Commercial buildings & offices
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🏥 Hospitals & cleanrooms
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🛒 Shopping malls & multiplexes
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🏠 Residential ducting systems
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🌬️ Supply & exhaust air ventilation
