lindab | air valves Valve KPF Technical data 1 Air flow, q [l/s] and [m3/h], total pressure loss, Δpt [Pa], and A-weighted sound power level, LWA [dB(A)], 2 for different settings, n [number of opening turns], are shown in the graphs. Sound power level in octave bands, LWok [dB], 3 is calculated as LWok = LWA + Kok. Kok is found in the table below. 4 Ød Valve nom mounted in Centre frequency [Hz] 63 125 250 500 1K 2K 4K 8K 80 Duct -12 -11 -9 -8 -5 -6 -9 -16 5 100 Duct -11 -10 -10 -8 -6 -5 -8 -15 125 Duct -10 -9 -7 -8 -6 -5 -8 -17 160 Duct -3 -2 -3 -5 -3 -8 -13 -22 6 200 Duct -3 -2 0 -4 -5 -8 -14 -22 7 Sound attenuation, ΔL, [dB] Ød Valve Centre frequency nom mounted in [Hz] 8 63 125 250 500 1K 2K 4K 8K 80 Duct 23 23 16 15 13 10 6 9 100 Duct 22 21 15 13 11 10 6 9 9 125 Duct 21 19 13 11 10 10 7 9 160 Duct 20 16 12 10 9 10 8 8 200 Duct 17 12 7 5 4 4 7 5 10 Measurement of air flow 11 Data is available in a separate brochure. 12 13 14 15 16 Δ pt [Pa] Ø 80 200 100 50 20 number of opening turns 0 2 4 6 8 10 15 20 40 35 30 25 LWA [dB(A)] Δ pt [Pa] 10 2 10 Ø 100 200 100 50 20 5 10 20 30 q 40 50 20 30 [l/s] 100 [m3/h] number of opening turns 2 4 6 8 10 12 15 20 45 40 35 30 25 LWA [dB(A)] 10 5 20 Ø 125 200 100 50 20 10 20 30 40 50 [l/s] 50 100 180 [m3/h] q number of opening turns 0 2 4 6 8 10 12 15 20 40 35 30 25 LWA [dB(A)] Δ pt [Pa] 10 5 20 10 20 30 40 50 80 [l/s] 50 100 q 200 [m3/h] 17 18 2 We reserve the right to make changes without prior notice
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