Lindab Kvapl Circular Straight Low-built Silencer Instructions (+ PDF)

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Circular straight low-built silencer KVAPL

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Description

KVAPL is a rectangular attenuator with circular connections and a low installation height.
Attenuation material is mineral wool covered with the textile to prevent fibers from coming out. The KVAPLs are made from galvanized steel sheets. The attenuator can be cleaned by rotating nylon brushes, a vacuum cleaner, or a damp cloth.
The openable model; can be used as a cleaning door and possibly to replace the acoustic infill.
Fulfills tightness class C.
Tested according to ISO 7235 standard.
Perforated sheet on top of the acoustic material, special materials, sizes, and flanges on request. Please contact Lindab sales.
The KVAPL comes in two different designs.

Model:
3.= Attenuator with mineral wool attenuation material.
4.= Openable Attenuator with mineral wool attenuation material.
To select the appropriate attenuator and optimize connection size and length for the best performance, please use our online tool Lindquist Visit www.lindQST.com to find out more.

Order code

Example: KVAPL 200 – 1000 – 3

Dimensions and sound data

KVAPL model 3 & 4

Insertion loss [dB] for centre frequency [Hz]												Model
Ød	l	a × b										3	4
[nom]	[mm]	[mm]	[mm]	63	125	250	500	1k	2k	4k	8k	[kg]	[kg]
100	300	252	154	7	9	12	20	23	23	20	12	2,3	2,5
100	600	252	154	9	15	19	38	50	50	49	28	3,8	4,0
100	1000	252	154	14	22	28	47	50	50	50	42	5,8	6,1
125	300	263	177	5	9	11	16	19	19	15	9	2,7	2,8
125	600	263	177	8	13	18	34	44	47	41	24	4,2	4,5
125	1000	263	177	11	21	28	46	50	50	50	41	6,3	6,7
160	300	280	212	4	6	10	14	16	16	11	8	3,1	3,2
160	600	280	212	10	9	17	28	36	41	28	19	4,8	5,0
160	1000	280	212	13	15	27	38	50	50	47	29	7,2	7,3
200	300	361	253	4	4	9	10	14	13	10	8	3,9	4,1
200	600	361	253	8	9	17	20	31	31	20	14	6,3	6,6
200	1000	361	253	14	12	27	36	50	50	32	20	9,4	9,9
250	600	431	303	7	7	13	16	26	22	16	13	8,9	9,2
250	1000	431	303	13	10	21	27	43	37	24	18	13,0	13,5
315	600	458	368	6	5	11	14	22	18	10	10	10,3	10,9
315	1000	458	368	11	7	18	25	38	29	17	13	14,6	15,5
400	600	518	453	5	5	9	13	14	10	8	8	15,9	16,7
400	1250	518	453	7	9	18	25	32	19	12	13	26,0	28,9
500	600	702	555	4	5	7	12	12	8	7	7	21,8	22,7
500	1250	702	555	6	9	13	23	26	14	10	11	36,4	38,2
630	600	851	684	4	5	6	11	10	7	6	6	29,2	30,4
630	1250	851	684	6	9	12	21	20	11	9	10	48,4	50,7

Model 3 and 4
Pressure loss and sound generation for 300 mm long attenuators

Model 3 and 4
Pressure loss and sound generation for 600 mm long attenuators

Model 3 and 4
Pressure loss and sound generation for 1000 and 1250 mm long attenuators (Ød1 400 – 630 → (l) = 1250 mm)

Kwoct correction tables model 3 and 4.

Ød1	Correction, Kwoct (dB) for center frequency [Hz]
[mm]	63	125	250	500	1k	2k	4k	8k
63	1	5	1	-2	-5	-14	-20	-31
80	0	3	2	-1	-7	-12	-17	-28
100	2	5	-1	1	-9	-19	-24	-42
125	7	6	2	0	-9	-15	-21	-41
160	8	3	1	0	-8	-14	-19	-37
200	4	4	4	-1	-9	-13	-20	-31
250	5	3	1	-2	-5	-10	-16	-28
315	7	5	2	-3	-5	-11	-17	-30
400	10	6	2	-2	-6	-13	-21	-27
500	6	6	2	-2	-6	-14	-22	-39
630	7	7	2	-2	-6	-15	-22	-40
Tol.+/-	3	3	2	3	3	4	4	5

Sound power levels per octave band Lwoct is calculated by adding the octave band corrections Koch to the total power level Lwa from the graphs.
Lwoct = LwA + Koct

Lindab reserves the right to make changes without prior notice
2022-03-04