ADC424 – Shut-off Damper for Circular Ducts – 4″

FAMCO ADC424 – 4″ 24V Normally Closed Motorized Damper

The FAMCO ADC424 is a 4″ motorized round duct damper designed for HVAC ventilation and airflow control applications. This 24-volt damper is normally closed and uses a powered-open, spring-return design, allowing the damper to open when energized and automatically return to the closed position when power is removed. Constructed from galvanized steel for durability, the ADC424 is designed for installation in compatible 4″ round duct systems.

Features

• 4″ round motorized duct damper
• 24V operation
• Normally closed configuration
• Power open with spring return closed
• Automatically returns to the closed position when power is removed
• Galvanized steel construction
• Designed for HVAC ventilation and airflow control applications
• Fits compatible 4″ round duct systems
• Powered opening time of approximately 15 to 30 seconds
• Spring return time of approximately 2 to 15 seconds
• Standard model without end switch

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