DUK_img_08psd.png
DUK-V

DUK_img_07psd.png
Actuator

Detail Actuator

DUK_img_04psd.png
For connection to circular ducts

Connection to circular ducts

DUK_img_01psd.png
DUK-V

DUK-V

DUK_img_06psd.png
DUK-F

DUK-F

DUK_img_08psd.png
DUK_img_07psd.png
DUK_img_04psd.png
DUK_img_01psd.png
DUK_img_06psd.png

DUK  

For installation into walls and onto rectangular and circular ducts, adjustable and fixed – made of aluminium

Adjustable and fixed jet nozzles achieve long throw distances under optimal acoustic conditions

  • Nominal sizes: 100, 125, 160, 200, 250, 315 and 400 mm
  • Volume flow rate range: 15 – 400 l/s or 54 – 1440 m³/h
  • Visible parts made of aluminium
  • For constant and variable volume flows
  • Low sound power levels due to aerodynamically optimised nozzle contours
  • Discharge angle can be adjusted manually or with an actuator
  • Quick, easy and concealed fixing

Optional equipment and accessories

  • Exposed surface in RAL CLASSIC colours
  • Circular spigot
  • Connection pieces for circular and rectangular ducts
  • Internal or external actuators for adjusting the discharge angle

General information 

Application

  • Type DUK jet nozzles for supply air discharge, with a long throw distance
  • For production halls, gymnasiums, theatres and conference rooms as well as for large internal spaces in airports, railway stations and shopping centres
  • Attractive design element for building owners and architects with demanding aesthetic requirements
  • For supply air to room air temperature differences from –12 to +20 K
  • Adjustable discharge angle, from –30 to +30°, for switching between heating and cooling mode
  • For push fitting directly onto circular ducts or as a branch off circular or rectangular ducts; also for installation into walls and bulkheads

Special characteristics

  • High discharge momentum, hence large penetration depth in heating mode
  • Optimised nozzle contours
  • Fixed and adjustable variants
  • Discharge angle can be adjusted from –30° to +30°, either manually or with an actuator
  • Electric actuator as an option

Nominal sizes

  • 100, 125, 160, 200, 250, 315, 400 mm

From nominal size 160 with actuator


Variants

  • F: Fixed jet nozzle
  • V: Adjustable jet nozzle

Connection

  • V-A: For circular ducts (direct connection)
  • V-K: For rectangular ducts
  • V-R: For circular ducts

Actuator

  • Manual adjustment
  • E*: External electric actuator

Parts and characteristics

  • Nozzle with acoustically optimised contours

Useful additions

  • TDC temperature difference control module


Technical data

  • Nominal sizes: 100, 125, 160, 200, 250, 315, 400 mm
  • Volume flow rate range: 15 to 400 l/s or 54 to 1440 m³ /h
  • Adjustable discharge angle: –30 to +30°
  • Supply air to room air temperature difference: –12 to +20 K

Useful additions

  • TDC temperature difference control module

Standards and guidelines

  • Sound power level of the air-regenerated noise measured according to EN ISO 5135


Maintenance

  • Maintenance-free, as construction and materials are not subject to wear and tear
  • Inspection and cleaning according to VDI 6022

Technical information

Function, Technical data, Quick sizing, Specification text, Order code

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE

DUK

Functional description

Jet nozzles are the preferred solution wherever the supply air has to travel large distances from the point of discharge to the occupied zone. It is possible to adapt the discharge angle, and consequently the direction of the airflow to heating or cooling mode. The supply air to room air temperature difference may range from –12 to +20 K.

Cooling mode

Cooling mode is possible with a positive discharge angle of up to 30°. The supply air jet is directed towards the ceiling, but the higher density of cold air results in an increasing deflection of the air jet towards the floor as the distance from the jet nozzle increases. When the supply air jet reaches the occupied zone, both the supply air to room air temperature difference and the airflow velocity have been reduced to comfortable levels.

This principle of operation allows for long throw distances.

Heating mode

Heating mode is possible with a negative discharge angle of –30° or less. The supply air jet is directed towards the occupied zone. Due to the lower density of warm air the jet becomes buoyant. When the supply air jet reaches the occupied zone, both the supply air to room air temperature difference and the airflow velocity should ideally have been reduced.

The discharge angle can be changed manually or with an electric actuator.

DUK-F

Functional description

Jet nozzles are the preferred solution wherever the supply air has to travel large distances from the point of discharge to the occupied zone. Fixed jet nozzles can be used for heating and cooling. The supply air to room air temperature difference can range from –12 to +20 K.

Cooling mode
The supply air is discharged horizontally, but the higher density of cold air results in an increasing deflection of the air jet towards the floor as the distance from the jet nozzle increases. When the supply air jet reaches the occupied zone, both the supply air to room air temperature difference and the airflow velocity have been reduced to comfortable levels.

Heating mode
The supply air is discharged horizontally, but due to the lower density of warm air the jet becomes buoyant. When the supply air jet reaches the occupied zone, both the supply air to room air temperature difference and the airflow velocity should ideally have been reduced.

Nominal sizes100, 125, 160, 200, 250, 315, 400 mm
Volume flow rate range15 – 400 l/s or 54 – 1440 m³/h
adjustable discharge angle–30 to +30°
Supply air to room air temperature difference–12 to +20 K

Quick sizing tables provide a good overview of the volume flow rates and corresponding sound power levels and differential pressures.

Exact values for all parameters can be determined with our Easy Product Finder design program.

DUK-V, DUK-V-A, DUK-V-A-(E1, E2, E3), DUK-V-K, DUK-V-K-(E1, E2, E3), DUK-V-R, DUK-V-R-(E1, E2, E3), sound power level and total differential pressure

NSVolume flow rate [l/s]Volume flow rate [m³/h]

Δpt [Pa]

LWA [dB(A)]

vL

0.5 m/s1.0 m/s
L [m]
10082811<15<5<5
100155438<155<5
100207268<157<5
1003010815230105
125155413<15<5<5
1253010849<158<5
1254516211031126
1256021619642168
16020729<15<5<5
1604014436<158<5
160602168119136
1608028814430178
2003512610<156<5
2007025237<15116
2001053788223179
200140504145352311
250551989<157<5
25011039635<15147
25016559477222111
250220792137342814
315903249<159<5
31518566637<15189
31526595475232613
315360129613735>3018
4001555586<15126
400310111634<152412
40046516747529>3018
400620223213340>3024

All values apply to discharge angle 0°
L: Throw distance with isothermal operation

DUK-V-A-(E4, E5, E6), DUK-V-K-(E4, E5, E6), DUK-V-R-(E4, E5, E6), sound power level and total differential pressure

NSVolume flow rate [l/s]Volume flow rate [m³/h]

Δpt [Pa]

LWA [dB(A)]

vL

0.5 m/s1.0 m/s
L [m]
16020729<15<5<5
1604014436188<5
160602168131136
1608028814441178
2003512610<156<5
200702523722116
2001053788235179
200140504145442311
250551989<157<5
2501103963520147
25016559477332111
250220792137432814
315903249<159<5
3151856663722189
31526595475332613
315360129613743>3018
4001555586<15126
400310111634222412
40046516747535>3018
400620223213344>3024

All values apply to discharge angle 0°
L: Throw distance with isothermal operation

DUK-F, sound power level and total differential pressure

NSVolume flow rate [l/s]Volume flow rate [m³/h]

Δpt [Pa]

LWA [dB(A)]

vL

0.5 m/s1.0 m/s
L [m]
1008286<153<5
100155433<155<5
100207261<1574
1003010814219115
125155410<154<5
1253010852<159<5
1254516212216136
1256021622026179
16020725<154<5
1604014431<159<5
1606021674<15137
1608028813420179
200351266<156<5
2007025233<15126
20010537879<15179
200140504143242312
250551986<157<5
25011039634<1514<5
25016559480182211
250220792145282914
315903246<1595
31518566636<151910
31526595477222714
3153601296145333719
4001555586<15126
400310111634172412
400465167481303518
400620223214840>3024

L: Throw distance with isothermal operation

Fixed and adjustable jet nozzles for the ventilation of large internal spaces such as halls and assembly rooms. Air discharge with long throw distance under optimal acoustic conditions. For horizontal air discharge; variants with fixed discharge angle, adjustable air discharge (360°), or air discharge with nozzle that tilts between –30 and +30°.

Fixed nozzles with acoustically optimised contours and countersunk holes for screw-fixing to a plane surface

Adjustable jet nozzles include a spherical nozzle casing and a casing with a spigot, raised edge or saddle connector.

For push fitting directly onto circular ducts or as a junction off circular or rectangular ducts; also for installation on plane surfaces.


Special characteristics

  • High discharge momentum, hence large penetration depth in heating mode
  • Optimised nozzle contours
  • Fixed and adjustable variants
  • Discharge angle can be adjusted from –30° to +30°, either manually or with an actuator
  • Electric actuator as an option

Useful additions

  • TDC temperature difference control module

Technical data

  • Nominal sizes: 100, 125, 160, 200, 250, 315, 400 mm
  • Volume flow rate range: 15 – 400 l/s or 54 – 1440 m³/h
  • Adjustable discharge angle: –30 to +30°
  • Supply air to room air temperature difference: –12 to +20 K

Sizing data

  • qv [m³/h]
  • Δpt [Pa]

air-regenerated noise

  • LWA [dB(A)]


DUKVRE1/250×630/P1 - RAL 9016
|||||||
1234567
1 Type
DUK
Jet nozzle

2 Discharge direction
F
fixed
V adjustable

3 Connection
Applies to discharge direction V only
No entry: without spigot
A Pipe connection spigot (axial)
K Duct connection spigot
R Saddle connector

4 Adjustment
No entry: manual adjustment
From nominal size 160

External electric actuator
E1 230 V AC, 3-point
E2 24 V AC/DC, 3-point
E3 24 V AC/DC, modulating, 2 – 10 V DC

5 Nominal size [mm]
100, 125, 160, 200, 250, 315, 400

6 Circular duct diameter [mm]

Only for connection R
200 (nominal size 100)
250 (nominal size 125)
315 (nominal size 160)
500 (nominal sizes 160 – 315)
630 (from nominal size 160)
800 (from nominal size 160)

7 Exposed surface
No entry: without surface finish
P0 powder-coated, RAL 9010 (pure white)
P1 powder-coated, specify RAL CLASSIC colour

Gloss level
RAL 9010 GU 50
RAL 9006 GU 30
All other RAL colours GU 70


Order example: DUK-V-R-E1/250×630/P1-RAL9016

TypeDUK
Air discharge directionadjustable
Connectionsaddle connector
Adjustment230 V AC, 3-point
Nominal size [mm]250
Circular duct diameter [mm]630
Exposed surfacePowder-coated, RAL 9016 (traffic white)

Variants, Product details

  • VARIANTS
  • PRODUCT DETAILS

Application

DUK-F

Application

DUK-V

Application

DUK-V-A

Designed for high comfort

Together with renowned designers and architects we have developed ceiling, wall, staircase and floor diffusers and grilles that are not only aesthetic design elements, but also meet demanding ventilation and acoustic requirements.

Application

DUK-V-K

Application

DUK-V-R

  • Ensure correct installation orientation
  • Installation directly onto circular ducts or as a junction off circular or rectangular ducts
  • DUK-F and DUK-V can also be installed on the face of plane surfaces, e.g. walls and bulkheads

The schematic diagrams are provided to illustrate installation details.

Product details

  • PRODUCT DETAILS

Product details

DUK-V

NS

ØD1

ØD2

Aeff [m²]

100146500.0019
125169640.0031
160200820.005
2002571080.0085
2503021360.0135
3153841740.0225
4004672300.0385

DUK-F

NS

ØD1

ØD2

Aeff [m²]

100138500.00174
125161640.00277
160225820.00469
2002651080.00813
2503151360.01289
3154001740.0211
4004852300.03683

Installation and commissioning

  • Ensure correct installation orientation
  • Installation directly onto circular ducts or as a junction off circular or rectangular ducts
  • DUK-F and DUK-V can also be installed on the face of plane surfaces, e.g. walls and bulkheads

The schematic diagrams are provided to illustrate installation details.

Downloads

product information

certificates

operation manuals

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Our department for Service-Requests will contact you asap.
For general question regarding products or services you can also call:
Tel.: +44 (0)1842 754545 | Fax: +44 (0)1842 763051