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SAR • Circular sound attenuators

Circular sound attenuator in galvanized steel with insulation shell thickness between 50 and 100 mm

Composition

  • Circular silencers are designed with an external galvanised duct system
  • Inner casing is made of perforated sheet steel
  • Cavity is filled with soundabsorbent mineral wool

Mounting

  • The attenuators should be mounted using duct suspension clamps, type OBMC, around the duct connection Ød
  • The outside diameter ØD of these attenuators may have small deviations in size

Sound attenuation values

SAR

Attenuation dB

125Hz

250Hz

500Hz

1kHz

2kHz

4kKz

8kHz

SAR 100 L=900

8

1527364247

24

SAR 125 L=600

61222283738

22

SAR 125 L=900

91830404843

24

SAR 150 L=600

491723229

18

SAR 150 L=900

71520354536

20

SAR 160 L=600

51018233330

19

SAR 160 L=900

81627364737

21

SAR 180 L=600

6917223229

18

SAR 180 L=900

91526354636

20

SAR 200 L=900

71324314431

20

SAR 250 L=900

81529344733

17

SAR 315 L=900

61222243626

19

SAR 355 L=900

71321253727

21

SAR 400 L=900

61220263228

24

SAR 450 L=900

6914232124

14

SAR 500 L=1200

71115242225

16

SAR 560 L=1200

71316242124

15

SAR 630 L=1200

7

14

18

25

21

21

15

Pressure loss

Dimensions

d [mm]

D [mm]

L [mm]

SAR 100 L=900

100

200

900

SAR 125 L=600

125

200

600

SAR 125 L=900

125

200

900

SAR 150 L=600

150

250

600

SAR 150 L=900

150

250

900

SAR 160 L=600

160

250

600

SAR 160 L=900

160

250

900

SAR 180 L=600

180

315

600

SAR 180 L=900

180

315

900

SAR 200 L=900

200

315

900

SAR 250 L=900

250

400

900

SAR 315 L=900

315

500

900

SAR 355 L=900

355

500

900

SAR 400 L=900

400

630

900

SAR 450 L=900

450

630

900

SAR 500 L=1200

500

630

1200

SAR 560 L=1200

560

800

1200

SAR 630 L=1200

630

800

1200
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