Swirl diffusers

Circular and square ceiling swirl diffusers

• Nominal sizes 5, 6, 8, 10, 12, 16 in
• Volume flow rate range 8.2 - 770 cfm
• Diffuser face made of galvanised sheet steel, powder-coated, or of aluminium (depending on variant)
• For supply and extract air
• For variable and constant volume flows
• For all types of ceiling systems
• With discharge nozzle ideal for cooling in case of freely suspended installation
• High induction results in a rapid reduction of the temperature difference and airflow velocity
• Air change rates of up to 35 per hour can be achieved by arranging several diffusers in a row with a minimum pitch of 3 ft (center line to center line)
• Ideal for comfort zones

Optional equipment and accessories

• Exposed diffuser face available in RAL CLASSIC colors
• Horizontal or vertical duct connection
• Plenum box with cord-operated damper blade and pressure tap
• Shallow plenum box

Circular and square ceiling swirl diffusers for high room air change rates

• Nominal sizes 300, 400, 500, 600, 625, 825
  
  
• Volume flow rate range 7 – 470 l/s or 25 – 1692 m³/h
  
  
• Diffuser face made of galvanised sheet steel, powder-coated
  
  
• For variable and constant volume flows
  
  
• For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  
  
• High induction results in a rapid reduction of the temperature difference and airflow velocity
  
  
• Very high room air change rate due to row arrangement with a minimum pitch distance of 0.9 m
  
  
• Ideal for comfort zones
  
  
• Circular diffuser faces can be easily mounted without tools in a circular plenum box with horizontal spigot

Optional equipment and accessories

• Exposed diffuser face available in RAL CLASSIC colours, air control blades in black or white
  
  
• Horizontal or vertical duct connection
  
  
• Square plenum box with cord-operated damper unit and pressure tap

Circular and square ceiling swirl diffusers with fixed air control blades, for high volume flow rates at low sound power levels and low differential pressure due to innovative polymer technology

• Nominal sizes 160, 250, 300, 400, 600, 625
  
  
• Volume flow rate range 5 – 385 l/s or 16 – 1386 m³/h
  
  
• Plastic diffuser face with overlapping, three-dimensionally contoured blades, for the most efficient swirl and high induction
  
  
• For supply and extract air
  
  
• For variable and constant volume flows
  
  
• For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
  
  
• Diffuser face with gently sloped, flat border – only 3 mm high
  
  
• Plenum box with acoustically optimised and lockable damper blade
  
  
• Spigot for nominal sizes 160 and 250 allows for quick, simple and direct connection to the ductwork
  
  
• Diffuser face with bayonet fixing (no tools required) available for nominal size 160 or 250 and with a spigot

Optional equipment and accessories

• Exposed diffuser face available in RAL CLASSIC colours

Standard plenum box for supply and extract air for square diffuser faces and for all type TDV, RFD, TID, ADLQ, DLQ, ADLR and DLQL diffusers. 

• Plenum box made of galvanised sheet steel
• For all types of ceiling systems
• Horizontal duct connection
• Permanent equalising element that ensures an optimum airflow through the diffuser face (supply air variant)
• For comfort zones and industrial zones

Optional equipment and accessories

• Damper unit for volume flow rate balancing
• Pressure tap and cord-operated damper blade for volume flow rate balancing
• Lip seal

Square ceiling swirl diffusers with perforated face plate, for comfort and industrial zones

• Nominal sizes 600, 625
• Volume flow rate range 4 – 260 l/s or 16 – 936 m³/h
• Perforated diffuser face made of galvanised sheet steel, powder-coated
• For supply and extract air
• For variable and constant volume flows
• For all types of ceiling systems, particularly for T-bar ceilings
• Swirl unit inside, 6 sizes, for the best swirl effect and high induction levels
• Ideal for comfort zones

Optional equipment and accessories

• Exposed diffuser face available in RAL CLASSIC colours
• Horizontal or vertical duct connection
• Plenum box with lining

Circular ceiling swirl diffusers, with manual or motorised adjustment of the air pattern to ensure draught-free ventilation of the occupied zone both in heating and cooling modes

• Nominal sizes 315, 400, 630, 800
• Volume flow rate range 65 – 1080 l/s or 234 – 3888 m³/h
• Diffuser face made of galvanised, powder-coated sheet steel and of aluminium
• For supply air
• For variable and constant volume flows
• High induction results in a rapid reduction of the temperature difference and airflow velocity
• Discharge direction can be adjusted manually or with an actuator
• Diffuser face with aerodynamically optimised contours
• Ideal for high rooms

Optional equipment and accessories

• Exposed diffuser face available in RAL CLASSIC colours
• Horizontal or vertical duct connection
• An extended border improves the horizontal air discharge in cooling mode
• Protective cage for use in gymnasiums
• Actuators for adjusting the air discharge direction
• Diffuser face can be removed from the room side

Circular and square ceiling swirl diffusers

• Nominal sizes 12, 16, 20, 24 in
• Volume flow rate range 23 - 627 cfm
• Diffuser face made of galvanized sheet steel, powder-coated
• For supply and extract air
• For variable and constant volume flows
• For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
• High induction results in a rapid reduction of the temperature difference and airflow velocity
• Air control blades can be adjusted individually for adjusting the air pattern
• Ideal for comfort zones

Optional equipment and accessories

• Exposed diffuser face available in RAL CLASSIC colors, air control blades in black or white
• Horizontal or vertical duct connection
• Plenum box with cord-operated damper blade and pressure tap

Circular and square ceiling swirl diffusers for high volume flow rates at low sound power levels and low differential pressure

• Nominal sizes 600, 625
• Volume flow rate range 31 – 265 l/s or 110 – 954 m³/h
• Diffuser face made of galvanised sheet steel, powder-coated
• For supply and extract air
• For variable and constant volume flows
• For all types of ceiling systems, and with an extended border also suitable for freely suspended installation
• Swirl unit inside for the best swirl effect and high induction levels
• Plenum box with acoustically optimised and lockable damper blade
• Ideal for comfort zones

Optional equipment and accessories

• Exposed diffuser face available in RAL Classic colours