griglia afonica griglia acustica griglie afoniche
0.6 mm with the longest side up to 450 mm
0.8 mm with the longest side up to 750 mm
1.0 mm with the longest side over 750 mm
20mm with longer side up to 1000mm
30mm with longer side than 1001 up to 2000mm
40mm with longer side over 2001 mm
Containment frame in 0,8 mm thick galvanized steel.
Structrural frame made of galvanized sheet steel with stiffening ribs. Bigger dimensions will be strengthen. Stainless steel or other materials on request.
Constructions with different flanges, without flanges, with flange on one side only or in stainless steel on request.
Soundproof material in high density panels made of rock wool certified and fire reaction class “0” (non-combustible) (DM. 26/06/1984).
Standard baffles coated in coupled glass fleece micro-stretched sheet metal. (maximum crossing speed up to 12 m/s). Other coatings on request.
Maximum operating temperature: 250°C.
Maximum operating pressure: 2000 Pa.
SIREZ20 series silencers are absorption silencers with 200 mm baffles. They represent the best solution both for abatement ration and costs. The silencers are used in civil and industrial air-conditioning systems with aim to reduce the noise propagated through the ventilation ducts. Noise attenuation passing through the distribution network, implies the reduction of the sound pressure level that reaches the terminal units and that is therefore spread into the environments treated. The sound levels caused by the ventilation system have to meet the requirements set by law, in accordance with their uses on the rooms.
The silencers can also be used to reduce noise emissions of the ejection ducts to the outside, wherever the environmental condition claims this by law.