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DSF • Volume control dampers for APW-4 and PS/APW-4

  • Volume control dampers
  • Square
  • Steel

Galvanized steel volume control dampers for APW-4 and PS/APW-4 diffusers, adjustable with lever between the blades of the diffuser

Brand

  • Cairox

Order example

  • DSF 444/300

Explanation

DSF = Volume damper type

444/300 = Size according to diffuser

Dimensions

 L x H [mm]
DSF 294/150145 x 145
DSF 369/225220 x 220
DSF 444/300295 x 295
DSF 519/375370 x 370
DSF 595/450445 x 445

Selection graphs

Symbols and specifications

  • The graph presents sound level in dB(A) as sound power level (without room attenuation) for the combination of grille and damper DWN. The value of Vk on the graph is for the grille without damper.

  • Ps = Pressure loss in Pa

  • Vk = Effective velocity of the corresponding grille
  • Min, 1/2, Max = Opening of the damper
  • dB(A) = Noise rate without room attenuation
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