lindab | air valves Diffuser supply air VVTK 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 graph. 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 -4 -7 -10 -14 125 Duct -2 -7 -7 -4 -4 -7 -10 -14 Sound attenuation, Δ L, [dB] Ød Diffuser nom mounted in Centre frequency [Hz] 63 125 250 500 1K 2K 4K 8K 100 Duct 24 20 18 12 10 10 10 10 125 Duct 24 20 18 12 10 10 10 10 Air jet diffusion pattern Maximum vertical width, b v = 0,1 × l 0,2 m Maximum horizontal width, b h = 0,6 × l 0,2 m Measurement of air flow Data is available in a separate brochure. Δ p t [Pa] Δ p t [Pa] Ø 100 200 100 50 20 6 6,0 5,0 a [mm] 8 10 12 4,0 l 0,2 [m] 3,0 45 40 35 30 25 L WA [dB(A)] 10 5 20 10 50 20 30 40 50 [l/s] 100 180 [m 3 /h] q Ø 125 200 100 50 20 6 6,0 5,0 a [mm] 8 10 12 4,0 l 0,2 [m] 3,0 45 40 35 30 25 L WA [dB(A)] 10 5 20 10 50 20 30 40 50 [l/s] 100 180 [m 3 /h] q 6 We reserve the right to make changes without prior notice 2014-03-07
Share
Print
Download PDF file
