Circulair (Circular Air Balancing Damper)

Actionair Circulair - Air Balancing Damper
Actionair Circulair - Air Balancing Damper

Circulair (Circular Air Balancing Damper)

Key Features

  • Manual control
  • New handle has the facility to fit an anti tamper locking screw
  • Extended bracket for standard or 50mm insulated ductwork
  • Common casing depth of 200mm
  • Eurovent duct sizes: 100-355mm dia
  • Stock Item
  • Casing leakage conforms to HVCA ductwork specification
  • DW144 Class C up to 1000Pa
  • Damper spigots conform to BSEN1506

Circulair dampers are circular air balancing dampers designed for inclusion into normal dry filtered air distribution systems

Actionair Circulair Air Balancing Dampers comprise of a single 1.2 mm galvanised steel blade housed within a 0.8 mm galvanised steel casing.


Complete with New Manual Control

The Manual Control will be suitable for uninsulated and insulated ductwork up to 50mm and have the facility to fit an anti-tamper locking screw. Our Circulair also has the facility to fit an anti tamper locking screw - the suggested screw for this is a No.4 (2.9mm) pan head self-tapping screw 8mm long. (To be supplied by others).


Technical and Sizing

Max Pa & Velocity

The Circulair Air Balancing Dampers are for low to medium pressure systems up to 1000Pa with a maximum air velocity of 12.5m/s

Operating Temperature

The Circulair Air Balancing Dampers should only be used in normal ducted systems, with operating temperature between 0˚C to +70˚C

Available in the following sizes

Nominal duct sizes of 100mm, 125mm, 150mm, 160mm, 200mm, 250mm, 300mm, 315mm, 350mm and 355mm (Actual sizes are in accordance with BS EN 1506: 1998)

circulair sizing.png

Circulair Construction

Blade - 1.2mm galvanised steel Blade Casing - 0.8mm galvanised steel casing Drive Shaft - Galvanised steel Control Handle - Nylon 6

Product Documents

Title Type Added Link
Circulair Catalogue Brochure about 10 months ago Download >

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