Exhaust valve lindab | air valves KU Technical data Air flow, q [l/s] and [m3/h], total pressure drop, Δpt [Pa], and A-weighted sound power level, LWA [dB], for different settings, a [mm], are shown in the graphs. Sound power level, LWok [dB], in octave bands is calculated as LWA + Kok. Kok is found in the table below. Ød Valve nom mounted in Centre frequency [Hz] 63 125 250 500 1K 2K 4K 8K 100 Duct – -8 -5 -6 -6 -4 -12 -21 125 Duct – -11 -4 -6 -7 -3 -16 -25 160 Duct – -7 -4 -6 -3 -6 -18 -31 200 Duct – -7 -6 -7 -2 -9 -18 -27 Tolerance – ±3 ±2 ±2 ±2 ±2 ±2 ±3 Sound attenuation, ΔL, [dB] Ød Valve nom mounted in 100 Duct 125 Duct 160 Duct 200 Duct Setting a [mm] -12 -5 5 -17 -9 5 -15 -5 5 -25 0 20 Centre frequency [Hz] 63 125 250 500 1K 2K 4K 8K 21 18 12 14 12 11 12 15 21 16 9 11 9 8 8 12 21 16 8 10 8 7 5 11 22 16 11 9 7 7 9 12 21 16 9 8 5 5 7 8 20 15 9 6 4 3 4 7 19 14 9 8 6 7 9 10 19 13 9 6 5 4 6 8 18 13 8 5 4 3 6 6 17 12 10 9 16 10 7 6 16 10 6 4 9 12 14 12 6 6 10 7 4596 Tolerance ±6 ±3 ±2 ±2 ±2 ±2 ±2 ±3 Measurement of air flow Data is available in a separate brochure. Δ pt [Pa] Δ pt [Pa] Ø 100 200 100 50 20 1 a [mm] -12 -9 -5 0 5 40 2 35 30 3 LWA [dB(A)] 4 Δ pt [Pa] 10 5 20 Ø 125 200 100 50 20 10 20 30 40 50 [l/s] 50 100 180 [m3/h] q a [mm] -17 -15 -12 -9 -6 -3 0 5 40 35 30 LWA [dB(A)] 10 5 20 Ø 160 200 100 50 20 10 20 30 40 50 80 [l/s] 50 100 200 [m3/h] q -20 -18 -15 a [mm] -10 -5 0 6 10 12 40 35 30 LWA [dB(A)] 10 10 40 15 20 30 40 50 100 200 q 100 130 [l/s] 300 400 [m3/h] 5 6 7 8 9 10 11 12 13 14 15 16 17 18 We reserve the right to make changes without prior notice 635
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