EGAF Aphonic grilles

Immagine
egaf 1
Immagine
egaf 1

Description

Galvanized steel aphonic grilles for both supply and exhaust air, with blades inclined by 45°.

Characteristics

The frame is made of galvanised steel sheet, with a standard depth of 300 mm. Blades with a 150 mm pitch made of galvanised steel sheet, shaped to contain the sound-absorbing material. Inside coated with micro-stretched mesh.
40 mm galvanised steel perimeter flange.
Bird mesh on request.
Sound-absorbing material with high density mineral wool, in fire reaction Class “0” (non-combustible) (Italian Ministerial Decree 26/06/1984).
Maximum operating temperature: 250°C. Maximum operating pressure: 2,000 Pa.

Installation

Assembly with screws on 40 mm flange or directly on duct.

Model

EGAF thickness 100mm;
EGAF thickness 150mm;
EGAF thickness 200mm;
EGAF thickness 300mm;
EGAF thickness 600mm (300mm + 300mm).

On request

-Stainless steel or aluminium frames
-Possibility of supplying painted product.
-L depths different from the standard.

Dimensions and effective cross-sections:

H (mm)
B (mm)4506007509001050120013501500165018001950
sezione efficace m²
3000,020,050,060,090,100,120,130,160,170,200,21
4000,030,070,090,120,140,170,190,220,240,280,29
5000,040,090,110,160,180,220,240,290,310,360,38
6000,050,110,140,190,220,270,300,350,38
7000,060,130,160,230,260,320,350,420,45
8000,070,160,190,280,300,370,410,480,52
9000,080,170,210,300,340,420,480,55
10000,090,190,240,330,380,470,520,61
11000,100,210,260,370,420,520,570,68
12000,110,230,290,400,460,570,63
13000,120,250,310,440,500,620,68
14000,130,270,340,470,540,670,74
15000,140,290,360,510,580,72
16000,150,310,390,540,620,77
17000,160,330,410,580,660,82
18000,170,350,440,610,70

Technical data:

H (mm)
B (mm)4506007509001050120013501500165018001950
Portata aria massima consigliata in m³/h e perdita di carico pari a 68 Pa.
3006801350169023702710338037204400473054105750
4009501900238033303810176052406190667076208100
500123024603070430049106140676079908600983010440
6001500301037605270602075208280978010530
70017803560445062307120890097901157012460
8002060411051407200823010280113101337014400
90023304670583081609330116601283015160
1000261052206520913010440130401435016960
11002880577072101010011540144201567018750
120031606320790011060126401581017390
130034406870859012030137501719018900
140037107430928013000148501857020420
1500399079809970139601596019950
16004270853010660149301706021330
17004540908011350158901817022710
180048209630120401686019270

Insertion attenuation

The insertion attenuation is the ability of the aphonic grille to reduce the noise produced by the ventilation system to the outside.

ModelsHz631252505001000200040008000
EGAF spessore 100mm[dB]123589910
EGAF spessore 150mm[dB]23379111011
EGAF spessore 200mm[dB]344711131212
EGAF spessore 300mm[dB]345912151415
EGAF spessore 600mm (300mm + 300mm)[dB]4591522272524

Soundproofing power

Soundproofing power is the ability of an element to prevent sound waves from passing from one room to another. It characterises the acoustic features of dividers and partitions, as well as of aphonic grilles installed on walls. Its soundproofing power complies with UNI EN ISO 140 - 3:2006 and UNI EN ISO 717 -1:2007.

ModelsHz125250500100020004000Rw
EGAF spessore 100mm[dB]24799109,0
EGAF spessore 150mm[dB]35710111110,0
EGAF spessore 200mm[dB]56712151412,0
EGAF spessore 300mm[dB]671018222316,0
EGAF spessore 600mm (300mm + 300mm)[dB]6101724302721,8

Pressure drops

Pressure drops in EGAF series aphonic grilles depend on the air velocity inside the duct and also on the direction of the air. In fact, pressure drops are generally greater in supply than in exhaust.

Modelsm/s123456810
EGAF spessore 100mmPa5194375117167293453
EGAF spessore 150mmPa6235290140200351544
EGAF spessore 200mmPa72760106163233410634
EGAF spessore 300mmPa83168120186266467723
EGAF spessore 600mm (300mm + 300mm)Pa13531212183444998961412

Price list: prices on request