Shut-off damper lindab | dampers and measure units DSU Property The blade is set via a knob in a protec- × × × × tive cup. The setting of the blade is read against an embossed scale at the rim of the × × × × cup. The blade is locked with two screws, type Pozidriv (PZD2). ×××× The blade has reinforced locking with a × sturdy wing nut. The blade is reinforced. ××× The blade is additionally reinforced. × With sturdy handle. ××× With additionally reinforced handle. × With reinforced stop beads. ×× The axle is reinforced. × The damper can be delivered prepared × × × × for motor. The damper can be delivered with mo- × × × × × tor. Ø 63–315 Ø 400 Ø 500 Ø 630 Ø 800–1000 Technical data Pressure drop graphs with noise data for dimensioning The solid curves show the pressure drop, Δ p t , over the damper as a function of flow q, and setting angle α . The dashed curves give the A-weighted sound power data, L WA , in dB to the duct. Example Given Dimension Ø100 Flow 60 l/s Pressure drop 200 Pa Obtained from graph Setting angle 38° Sound power level 63 dB (A) Δ p t L WA [dB] Ø80 [Pa] 500 300 200 100 50 30 20 5 1 80 70 35 10 2 α [°] 60 50 40 75 30 70 65 60 20 55 50 10 45 40 20 30 q 40 50 3 45 10 v 75 [l/s] 15 [m/s] Ø100 [Pa] 80 70 500 300 200 100 α [°] 60 50 40 75 30 70 65 20 60 55 Δ p t L WA [ dB] 50 30 20 8 35 30 10 50 45 40 20 30 40 50 q 10 120 [l/s] 1 2 3 45 10 15 [m/s] v DUCT-MC Lindab reserves the right to make changes without prior notice 2 Identification number 17.11.002 2019-06-26
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