Vents SR 250/900 ventilation silencer is designed to absorb noise. In a galvanized steel casing, the internal space is filled with non-flammable sound-absorbing material. For connection with other elements of the ventilation system, connecting flanges with a rubber seal are provided. This model is designed for connection to air ducts or other circular elements with a diameter of 250 mm. The length of the silencer is 900 mm.
Installation
The silencer is attached to the air ducts using clamps. It is recommended to install a silencer where the air ducts (supply and exhaust) pass through the wall of the room in which the ventilation equipment is located. In this case, the silencer must have its end 'include' into the wall. You can also achieve maximum noise absorption by installing two noise suppressors - before the ventilation unit (fan) and after.
| Noise level reduction, dB (octave frequency bands, Hz) | ||||||||
| 63 Hz | 125 Hz | 250 Hz | 500 Hz | 1000 Hz | 2000 Hz | 4000 Hz | 8000 Hz | |
| CP 250/900 | 4 | 5 | 7 | 16 | 32 | 20 | 12 | 10 |
Overall dimensions
| Dimensions | D | D1 | L | L1 |
| 249 | 350 | 900 | 50 |
Diagram of pressure drop versus air flow
Example of using a CP silencer
