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JET-MC • Multi-JET duct grille

  • Grilles for circular ducts
  • Grey RAL 9006
  • Multi-nozzles

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

Copy
  • 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-MCL [mm]H [mm]L+50 [mm]# NOZZLES
300 X 100 1R3N3001003503
400 X 100 1R4N4001004504
500 X 100 1R5N5001005505
600 X 100 1R6N6001006506
800 X 100 1R8N8001008508
1000 X 100 1R10N1000100105010
300 X 200 2R3N3002003506
400 X 200 2R4N4002004508
500 X 200 2R5N50020055010
600 X 200 2R6N60020065012
800 X 200 2R8N80020085016
1000 X 200 2R10N1000200105020

Quick selection

JET-MC 1R300 X 100
1R3N		400 X 100
1R4N		500 X 100
1R5N		600 X 100
1R6N		800 X 100
1R8N		1000 X 100
1R10N
QAk0.00380.0050.00630.00750.01010.0126
100Vk7.45.54.43.7  
X0,2512.49.77.66  
Ps 3519129  
Lw(A)<20<20<20<20  
150Vk11.18.36.65.54.13.3
X0,2516.213.511.49.775
Ps 78442819117
Lw(A)23<20<20<20<20<20
200Vk 11.18.87.45.54.4
X0,25 16.21412.49.77.6
Ps  7849351912
Lw(A) 24<20<20<20<20
300Vk  13.311.18.36.6
X0,25  17.916.213.511.4
Ps   111784428
Lw(A)  3026<20<20
400Vk    11.18.8
X0,25    16.214
Ps     7849
Lw(A)    2722
600Vk     13.3
X0,25     17.9
Ps      111
Lw(A)     33
JET-MC 2R300 X 200
2R3N		400 X 200
2R4N		500 X 200
2R5N		600 X 200
2R6N		800 X 200
2R8N		1000 X 200
2R10N
QAk0.00750.01010.01260.01510.02010.0251
100Vk3.7     
X0,256     
Ps 9     
Lw(A)<20     
150Vk5.54.13.3   
X0,259.775   
Ps 19117   
Lw(A)<20<20<20   
200Vk7.45.54.43.7  
X0,2512.49.77.66  
Ps 3519129  
Lw(A)<20<20<20<20  
300Vk11.18.36.65.54.13.3
X0,2516.213.511.49.775
Ps 78442819117
Lw(A)26<20<20<20<20<20
400Vk 11.18.87.45.54.4
X0,25 16.21412.49.77.6
Ps  7849351912
Lw(A) 2722<20<20<20
600Vk  13.311.18.36.6
X0,25  17.916.213.511.4
Ps   111784428
Lw(A)  332923<20
800Vk    11.18.8
X0,25    16.214
Ps     7849
Lw(A)    3025
1000Vk    13.811.1
X0,25    18.216.2
Ps     12078
Lw(A)    3631
1200Vk     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.

Placement instruction
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