Commercial Products  >  Dampers and Accessories


Automatic Damper - Flanged

The ADF is an Automatic Damper used to prevent flow through the connector when the heating appliance is off. It is also used to balance the draft in a boiler connector where multiple boilers are venting into a single, common chimney.


  • Saves energy
  • Damper housing and blade in stainless steel 316L
  • For chimneys with 1/2" flanged connections
  • Can be used up to 1400°F (760°C) / 1800°F (980°) intermittent
  • For use with all types of boilers - condensing and non-condensing
  • Pressure tight bearings up to 60"WC (optional)
  • Positive seal in closed position (optional)


Available Sizes (ID) 6" to 36" (150mm to 900mm)
Material Stainless Steel 316L
Actuator Brushless DC Motor
Power 120VAC or 24VAC/VDC Brushless Motor
Torque 54 in-lbs (6 Nm)
Speed 90° in 15 Sec.
End Switches 1
Temperature Rating 1400°F (760°C) / 1800°F (980°) intermittent
Warranty 2-year Factory Warranty
Listing/Certification UL 378 Standard for Draft Equipment

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