lindab | dampers and measure units Constant-/ variable flow damper Technical data Pressure and flow ranges and sound to duct DAU, DA2EU, DAVU Δ p t Δ p t Δ p t Δ p t Ø 160 [Pa] 1000 900 800 65 700 v 5 70 L WA 10 [m/s] 75 [dB] 600 500 400 60 300 200 55 100 50 50 40 50 75 100 125 150 175 200 220 [l/s] 200 300 400 500 600 700 q [m³/h] Ø 200 [Pa] 1000 900 800 5 70 v 75 L WA 10 [m/s] [dB] 700 600 65 500 400 60 300 200 55 100 50 50 45 70 100 150 200 250 300 350 [l/s] 300 400 600 800 1000 1200 [m³/h] q Ø 250 [Pa] v 5 10 [m/s] 1000 75 [dB] 900 70 L WA 800 700 600 500 65 400 60 300 200 55 100 50 50 45 110 200 300 400 500 600 [l/s] 400 600 800 1000 1500 q 2000 [m³/h] Ø 315 [Pa] 1000 900 800 70 700 v 5 75 L WA 10 [m/s] [dB] 600 500 65 400 300 60 200 55 100 5405 50 200 300 400 500 600 700 800 [l/s] 1000 1500 2000 q 2500 [m³/h] The grey area in the graph shows the minimum pressure drop needed for the product to start working. Even if the damper blade is fully open you get this pressure drop measured over the product. 4 DUCT-MC Identification number 17.11.002 Lindab reserves the right to make changes without prior notice
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