The Overpressure Damper ZPC is a butterfly-type backdraft valve designed to prevent unwanted reverse airflow in round ventilation ducts. It features spring-loaded blades made of anodized aluminium that automatically open with air pressure and close when airflow stops. The galvanized steel casing ensures durability and corrosion resistance. Ideal for horizontal installation with a vertical axis, the ZPC damper provides efficient airflow control and improves energy efficiency in HVAC systems.

• Spring loaded blades mechanism, non adjustable, blades are opened by air pressure and are closed with a spring
• Casing made out of galvanized steel sheet, damper blade made out of anodized aluminium
• In case of horizontal installation, damper axis must be in vertical position
• Install the backdraft damper into the ventilation system with respect to the air flow direction