Diffuser supply air lindab | air valves VTTB Technical data Air flow, q [l/s] and [m 3 /h], total pressure drop, Δ p t [Pa], throw length, l 0,2 [m], and A-weighted sound power level, L WA [dB], for different settings, a [mm], are shown in the graphs. Note! The A-weighted sound power level, L WA , will increase by 3 dB when the valve is mounted in a bend. Sound power level, L Wok [dB], in octave bands is calculated as L WA + K ok . K ok is found in the table below. Ød Diffuser Centre frequency nom mounted in [Hz] 63 125 250 500 1K 2K 4K 8K 100 Duct -2 -7 -7 -4 -5 -5 -13 -20 125 Duct -1 -2 -3 -3 -4 -7 -13 -16 160 Duct 1 2 -2 -2 -4 -9 -14 -9 Sound attenuation, Δ L, [dB] Ød Diffuser Centre frequency nom mounted in [Hz] 63 125 250 500 1K 2K 4K 8K 100 Duct 25 22 17 13 12 11 11 11 125 Duct 25 20 15 12 11 9 9 9 160 Duct 26 17 13 12 11 7 7 8 Air jet diffusion pattern Maximum vertical width, b v = 0,1 × l 0,2 m Measurement of air flow Data is available in a separate brochure. Δ p t [Pa] Ø 100 200 100 50 20 10 5 20 Ø 125 200 l 0,2 [m] 3,0 4 5,0 4,0 56 a [mm] 8 10 12 16 45 40 35 30 25 L WA [dB(A)] 10 20 30 40 50 [l/s] 50 100 180 [m 3 /h] q a [mm] 4 5 6 8 10 12 16 7,0 100 6,0 l 0,2 [m] 5,0 4,0 50 45 40 35 Δ p t [Pa] 30 20 25 L WA [dB(A)] 10 5 20 10 50 20 30 40 50 100 200 q 80 [l/s] [m 3 /h] Ø 160 200 100 50 20 5,0 4,0 l 0,2 [m] 3,0 a [mm] 5 8 10 12 16 20 45 40 35 30 25 L WA [dB(A)] 10 10 40 15 20 30 40 100 q 50 200 100 130 [l/s] 300 400 [m 3 /h] Δ p t [Pa] We reserve the right to make changes without prior notice 9 2016-04-29
Download PDF file