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SAC/SACO • Circular sound attenuator

Circular
Galvanized steel
POD/No POD

Datasheet

Circular sound attenuator in galvanized steel with POD (SACO) or without POD (SAC)

Application

The sound attenuators are used to absorb the noise in air conditioning or ventilation ducts

Composition

Casing in galvanized steel, thickness 0,8 mm up to ø 1250 and 1,0 mm over
Mounting flange with threaded insert
Acoustic material in mineral wool 70 Kg /m³ with protection against erosion by glass fibre fire resistance MO and extended metal sheet
Acoustic data tested in accordance to ISO 7235 (test report N°9580180)

Options

Stainless steel execution on request

Order example

SAC3151D

Explanation:

SAC = Type of sound attenuator (without POD)

SACO = Type of sound attenuator (with POD)

315 = Connection diameter in mm

1D = Length in mm (1 x diameter)

2D = Length in mm (2 x diameter)

Sound attenuation values

	L	125Hz	250 Hz	500 Hz	1000 Hz	2000 Hz	4000 Hz	8000 Hz
SAC 315	1D	1	3	8	14	9	8	7
SAC 315	2D	6	6	16	26	17	13	9
SACO 315	1D	1	4	9	16	17	13	10
SACO 315	2D	6	7	17	32	33	22	17
SAC 355	1D	0	3	9	14	10	8	6
SAC 355	2D	2	6	15	25	16	12	10
SACO 355	1D	0	4	11	22	21	15	12
SACO 355	2D	2	8	19	40	39	27	20
SAC 400	1D	0	4	10	13	8	8	5
SAC 400	2D	2	7	18	24	15	12	9
SACO 400	1D	1	4	11	20	18	14	11
SACO 400	2D	2	9	20	37	35	23	16
SAC 450	1D	1	4	12	12	9	6	6
SAC 450	2D	1	7	21	21	15	10	8
SACO 450	1D	1	6	14	21	19	13	9
SACO 450	2D	3	10	23	39	36	21	15
SAC 500	1D	0	4	13	11	9	6	5
SAC 500	2D	2	8	23	21	14	11	8
SACO 500	1D	2	5	13	20	16	11	8
SACO 500	2D	3	10	24	38	32	18	12
SAC 560	1D	0	4	14	11	8	5	4
SAC 560	2D	1	9	24	19	14	10	7
SACO 560	1D	1	6	15	21	17	11	8
SACO 560	2D	2	12	27	41	35	18	12
SAC 630	1D	1	5	14	10	9	5	5
SAC 630	2D	2	9	25	17	14	10	7
SACO 630	1D	1	6	15	19	16	10	8
SACO 630	2D	3	11	27	37	29	15	12
SAC 710	1D	1	5	12	9	7	5	5
SAC 710	2D	4	9	24	14	11	8	8
SACO 710	1D	2	7	15	20	18	12	10
SACO 710	2D	5	14	29	41	32	18	15
SAC 800	1D	3	7	9	8	6	5	4
SAC 800	2D	6	13	22	14	10	9	7
SACO 800	1D	3	9	12	17	15	9	8
SACO 800	2D	6	16	29	35	26	15	12
SAC 900	1D	3	7	13	8	6	5	4
SAC 900	2D	6	14	23	13	9	7	6
SACO 900	1D	4	8	15	16	11	8	7
SACO 900	2D	7	17	30	34	20	12	11

Pressure loss

	200/100		200/150		200/200
V (m/s)	∆pt Pa	LwA dB (A)	∆pt Pa	LwA dB (A)	∆pt Pa	LwA dB (A)
1	5	<20	<5	<20	<5	<20
2	21	32	10	23	7	25
3	47	44	23	36	17	37
4	78	52	42	44	28	43
5	125	57	63	51	45	50
6	88	57	64	54
7	120	61	84	58
8	150	65	110	61
9	140	64

Dimensions

	ø l	ø E	ø F	ø Y	L [mm]
ø	[mm]	[mm]	[mm]	[mm]	ø l x 1	ø l x 2
315	315	455	355	140	315	630
355	355	495	395	200	355	710
400	400	540	450	200	400	800
450	450	610	500	245	450	900
500	500	660	560	245	500	1000
560	560	720	620	295	560	1120
630	630	790	690	295	630	1260
710	710	870	770	380	710	1420
800	800	1000	860	380	800	1600
900	900	1100	970	380	900	1800

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