Multinozzle diffuser for duct mounting on circular ducts. Available with 3 to 10 nozzles in 1 or 2 rows.
Brand
Cairox
Application
Multinozzle duct grille for ventilation, heating and cooling purposes in large spaces in hotels, shopping malls, theatres, etc. where long ranges of air must be diffused at low noise levels
The shape of the nozzles allows them to be individually pointed in any direction in an angle of maximulm 30°.
Material
Front diffuser in steel plate finished RAL 9006 to match galvanized steel ductwork
Aluminium nozzles
Colour
Standard powder coated in RAL9006 (grey aluminium look)
Plastic ring available in RAL9016 & 9005 upon request
Composition
Profiled powder coated steel plate with curved shape to match duct diameter
Diffusers with 1 row require a duct of Ø315 to Ø900, diffusers with 2 rows require a duct of Ø630 to Ø1400. Quantity of rows is mentioned in the diffuser type = #R
3 till 10 aluminium nozzles/row in comparable finish as the powder coated plate = #N, mentioned in the diffuser type
Predrilled holes for direct duct mounting on the spiral duct
Mounting
The diffuser can be mounted in a cut-out opening lateral to the circular duct and fixed by means of visible screws
Text for tender
The air ducts will be equipped with multinozzle diffusers for medium airflows at low noise levels. These diffusers consist of aluminium nozzles mounted in 1 or 2 rows in a steel construction. All nozzles can be individually adjusted to obtain a perfect air pattern. The standard finish of the diffuser is RAL 9006 to match with common galvanized ductwork, but can also be obtained in other colors upon request.
Cairox Type JET-MC
The air ducts will be equipped with multinozzle diffusers for medium airflows at low noise levels. These diffusers consist of aluminium nozzles mounted in 1 or 2 rows in a steel construction. All nozzles can be individually adjusted to obtain a perfect air pattern. The standard finish of the diffuser is RAL 9006 to match with common galvanized ductwork, but can also be obtained in other colors upon request.
Cairox Type JET-MC
Order example
JET-MC, 1R6N, 600 X 100, RAL 9006
Expanation
JET-MC : Type of diffuser
1R6N : 1 Row, 6 Nozzles
625 X 125 : Size L X H
RAL 9006 : Aluminium finish
Dimensions
JET-MC
L [mm]
H [mm]
L+50 [mm]
# NOZZLES
300 X 100 1R3N
300
100
350
3
400 X 100 1R4N
400
100
450
4
500 X 100 1R5N
500
100
550
5
600 X 100 1R6N
600
100
650
6
800 X 100 1R8N
800
100
850
8
1000 X 100 1R10N
1000
100
1050
10
300 X 200 2R3N
300
200
350
6
400 X 200 2R4N
400
200
450
8
500 X 200 2R5N
500
200
550
10
600 X 200 2R6N
600
200
650
12
800 X 200 2R8N
800
200
850
16
1000 X 200 2R10N
1000
200
1050
20
Quick selection
JET-MC 1R
300 X 100
1R3N
400 X 100
1R4N
500 X 100
1R5N
600 X 100
1R6N
800 X 100
1R8N
1000 X 100
1R10N
Q
Ak
0.0038
0.005
0.0063
0.0075
0.0101
0.0126
100
Vk
7.4
5.5
4.4
3.7
X0,25
12.4
9.7
7.6
6
Ps
35
19
12
9
Lw(A)
<20
<20
<20
<20
150
Vk
11.1
8.3
6.6
5.5
4.1
3.3
X0,25
16.2
13.5
11.4
9.7
7
5
Ps
78
44
28
19
11
7
Lw(A)
23
<20
<20
<20
<20
<20
200
Vk
11.1
8.8
7.4
5.5
4.4
X0,25
16.2
14
12.4
9.7
7.6
Ps
78
49
35
19
12
Lw(A)
24
<20
<20
<20
<20
300
Vk
13.3
11.1
8.3
6.6
X0,25
17.9
16.2
13.5
11.4
Ps
111
78
44
28
Lw(A)
30
26
<20
<20
400
Vk
11.1
8.8
X0,25
16.2
14
Ps
78
49
Lw(A)
27
22
600
Vk
13.3
X0,25
17.9
Ps
111
Lw(A)
33
JET-MC 2R
300 X 200
2R3N
400 X 200
2R4N
500 X 200
2R5N
600 X 200
2R6N
800 X 200
2R8N
1000 X 200
2R10N
Q
Ak
0.0075
0.0101
0.0126
0.0151
0.0201
0.0251
100
Vk
3.7
X0,25
6
Ps
9
Lw(A)
<20
150
Vk
5.5
4.1
3.3
X0,25
9.7
7
5
Ps
19
11
7
Lw(A)
<20
<20
<20
200
Vk
7.4
5.5
4.4
3.7
X0,25
12.4
9.7
7.6
6
Ps
35
19
12
9
Lw(A)
<20
<20
<20
<20
300
Vk
11.1
8.3
6.6
5.5
4.1
3.3
X0,25
16.2
13.5
11.4
9.7
7
5
Ps
78
44
28
19
11
7
Lw(A)
26
<20
<20
<20
<20
<20
400
Vk
11.1
8.8
7.4
5.5
4.4
X0,25
16.2
14
12.4
9.7
7.6
Ps
78
49
35
19
12
Lw(A)
27
22
<20
<20
<20
600
Vk
13.3
11.1
8.3
6.6
X0,25
17.9
16.2
13.5
11.4
Ps
111
78
44
28
Lw(A)
33
29
23
<20
800
Vk
11.1
8.8
X0,25
16.2
14
Ps
78
49
Lw(A)
30
25
1000
Vk
13.8
11.1
X0,25
18.2
16.2
Ps
120
78
Lw(A)
36
31
1200
Vk
13.3
X0,25
17.9
Ps
111
Lw(A)
36
Symbols and specifications
Above values are for multi-nozzlediffusers in 1 or 2 rows
LxH = Width L and height H in mm
¾ Q = Air volume in m³/h
Ak = Effective surface (free area) in m²
Vk = Average effective velocity through the grille in m/s
X0.25 = Horizontal throw in m at an end velocity Vt of 0.25 m/s
Ps = Static pressure loss given in Pa
Lw(A) = Acoustic power in dB(A)
The throw X0.25 is given without deflection of the airstream at an end velocity of 0.25m/s. For all special requirements,
please contact our engineering office.
The values are given for isothermal supply air. Throw distances for cooling conditions at -11K can be calculated by
deviding the X0.25 values with factor 1.1. For heating purposes at Dt of +11K a multiplier of 1.1 should be applied to
the given X0.25 value.
Acoustic powers below 20dB(A) are mentioned as "<20" in the tables.