SFR Silencer
Semi-rigid design
SRF Silencer
Description
Design
The semi-rigid SRF silencer is applied for noise absorption produced during the
ventilating equipment operation and spread along the ducting systems. Suitable for
installation into round ducts.
SRF silencer casing consists of internal and external aluminium-alloy spiral seam
tubes filled with flameproof sound insulating material. The casing external surface is perforated and has the protecting cover to prevent the fiber blowing-out.
The minimum bending radius of the silencer is up to 2 diameters.
The silencer reduces the noise level in the air duct significantly (refer the diagram
«Noise level reduction»). The silencer is applied jointly with the sound-insulated
fan in case of low-noise requirements not only to the air duct but to the equipment
altogether.
Models available
Code
Description
SRF100/500
100mm Silencer Semi Rigid x 500mm long
SRF125/500
125mm Silencer Semi Rigid x 500mm long
SRF150/500
150mm Silencer Semi Rigid x 500mm long
SRF200/500
200mm Silencer Semi Rigid x 500mm long
SRF/250500
250mm Silencer Semi Rigid x 500mm long
SRF315/500
315mm Silencer Semi Rigid x 500mm long
(Other diameters and lengths on request)
Mounting
The silencer design allows fixing it on the round ducts in any position by means
of clamps. The linear mounting is preferable for to attain the better effect. To
prevent the flexible silencer sagging it should be fixed not only at the ends but in
the middle.
SRF Silencer
Noise level reduction, dB (Octave frequency band Hz)
Model
63Hz
125Hz
250Hz
500Hz
1000Hz
2000Hz
4000Hz
8000Hz
SRF100/500
6
8
13
22
28
34
17
20
SRF125/500
4
7
14
20
31
31
13
12
SRF150/500
3
7
12
32
40
40
19
20
SRF200/500
2
5
12
20
26
21
10
10
SRF250/500
2
3
8
16
22
13
10
10
SRF315/500
2
4
9
18
21
12
7
9
Model
ØD
ØD1
L
L1
Kg
SRF100/500
99
200
500
50
1.5
SRF125/500
124
225
500
50
1.8
SRF150/500
149
250
500
50
1.9
SRF200/500
199
300
500
50
2.4
SRF250/500
249
350
500
50
2.8
SRF315/500
314
415
500
50
3.2
Dimensions
SRF Silencer
Typical installation
Performance graph
SRF (L=500mm)
1- SRF100/500
2- SRF125/500
3- SRF150/500
5- SRF200/500
6- SRF250/500
7- SRF315/500