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Sound attenuating valve
- Sound-insulated telesopic duct - reduces traffic noise
- Disc valve with cord - 3 opening settings
- Cover with anti-condensation insulation - reduced condensation at low temperatures
- For wall thicknesses between 25 and 40 cm - the tube can easily be sawn off
Sound reduction
The unit attenuates sound by approx. 25 % as compared to a register without insulation. Tested at the Jydsk Institute of Technology, Arhus, Denmark. A test report is available on request.
|
Closed |
45 dB |
|
Setting n° 1 |
28 dB |
|
Setting n° 2 |
27 dB |
|
Setting n° 3 |
26 dB |
