Specifications

A backdraft damper, also known as a backflow preventer or a non-return damper, is a mechanical device used in heating, ventilation, and air conditioning (HVAC) systems to control the direction of airflow. It is designed to allow airflow in one direction while preventing it from flowing in the opposite direction. The primary purpose of a backdraft damper is to prevent unwanted air or drafts from entering a space when the HVAC system is not in use or when it is necessary to maintain a unidirectional flow of air. These dampers are commonly used in exhaust systems, dryer vents, and other HVAC applications to improve energy efficiency and indoor air quality by ensuring that air flows in the intended direction.