DV swirl diffuser
Air diffusers, plenum boxes & air valves

DV swirl diffuser

Technical details

  • suitable for supply and exhaust air
  • radial air deflection blades, arranged in a axially symmetrical pattern
  • adjustable air deflection blades
  • Nominal sizes ∅: 325 mm until 825 mm
  • Hygiene certificate


Hygiene certificate

Product details

DV Swirl Diffusers with radial air deflection blades made of steel and arranged in axially symmetrical pattern. This special design guarantees optimum room flow performance. The DV Swirl Diffuser is suitable for constant and variable supply air volume flow rates. The radial air distribution takes place via centrally slotted, square or circular front plates with adjustable, steel air deflection blades invisibly fastened on the rear. The room air flow can be altered later to suit room geometries by means of the adjustable air deflection blades. DV Swirl Diffusers are made of powder coated, galvanized sheet steel.

DV exhaust air diffuser is a diffuser without air deflection blades which is suitable for exhaust air only. The product favours larger free cross-sections and higher volume flow rates at the same sound power levels. The design, surfaces and dimensions are the same as for the supply air swirl diffuser.

  • Nominal sizes: 325 mm until 825 mm
  • Hole pattern:   325 mm until 800 mm

Technical specifications

Not all of the variant values listed here can be combined with each other. Use our Wildeboer configurator to easily check the possible combinations.

Front plate form
  • Quadr., circular hole pattern
  • Circular, circular hole pattern
Front plate size
  • 325 mm
  • 400 mm
  • 500 mm
  • 600 mm
  • 625 mm
  • 800 mm
  • 825 mm
Hole pattern size
  • 325 mm
  • 400 mm
  • 500 mm
  • 600 mm
  • 800 mm
Connection parts
  • Quadr. plenum box, 1 lat. connect. piece
  • Quadr. plenum box, 2 lat. connect. piece
  • Quadr. plenum box, 1 top connect. piece
  • Circular plenum box, 1 lat. connect. p.
  • Circular plenum box, 1 lat. connect. p.
Connecting piece dimensions
  • DN100
  • DN125
  • DN150
  • DN160
  • DN180
  • DN200
  • DN224
  • DN250
  • DN280
  • DN300
  • DN315
  • DN355
  • Without damper
  • With damper
Air deflector plate
  • Without air deflector plate
  • With air deflector plate
Colour Plenum box
  • Galvanized inside and outside
  • Galvanized inside, outside in colour RAL
  • Black inside & outside
Lip seal
  • Without lip seal
  • With lip seal
Air direction
  • Supply air (outflowing)
  • Exhaust air (inflowing)

Product pictures

Media & Downloads

Quick selection swirl diffuser (2020-11 / DE)
Hygiene advices swirl diffuser (2010-09 / DE)
User manual DV swirl diffuser (2020-04 / DE)
Hygiene certificate DV swirl diffuser (2022-11 / DE)