Type 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 and have excellent acoustic properties

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

DUK-V 00189947_0


  • Application
  • Description

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*: Internal or external electric actuator

Parts and characteristics

  • Nozzle with acoustically optimised contours

Useful additions

  • TDC temperature difference control module

Construction features

  • Spigot (optional) suitable for circular ducts to EN 1506 or EN 13180.

Materials and surfaces

Fixed

  • Nozzle made of aluminium
  • Untreated surface


Adjustable

  • Nozzle and face cover ring made of aluminium
  • Spherical nozzle casing ring, casing, saddle connector and spigot made of galvanised sheet steel
  • Spherical nozzle casing made of plastic, UL 94, V-0, flame retardant, heat resistant up to 50 °C
  • Nozzle and face cover ring untreated
  • Spherical nozzle casing similar to RAL 9010, white
  • P0: Nozzle and face cover ring powder-coated RAL 9010, pure white
  • P1: Nozzle and face cover ring powder-coated, RAL CLASSIC colour

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
  • Inspection and cleaning to VDI 6022

Technical information

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

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

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.

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


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 programme.

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

Nominal size Volume flow rate Δpt LWA vL
Nominal size Volume flow rate Δpt LWA 0.5 m/s 1.0 m/s
Nominal size Volume flow rate Δpt LWA L
Nominal size l/s m³/h Pa dB(A) m

100

8

28

11

<15

<5

<5

100

15

54

38

<15

5

<5

100

20

72

68

<15

7

<5

100

30

108

152

30

10

5

125

15

54

13

<15

<5

<5

125

30

108

49

<15

8

<5

125

45

162

110

31

12

6

125

60

216

196

42

16

8

160

20

72

9

<15

<5

<5

160

40

144

36

<15

8

<5

160

60

216

81

19

13

6

160

80

288

144

30

17

8

200

35

126

10

<15

6

<5

200

70

252

37

<15

11

6

200

105

378

82

23

17

9

200

140

504

145

35

23

11

250

55

198

9

<15

7

<5

250

110

396

35

<15

14

7

250

165

594

77

22

21

11

250

220

792

137

34

28

14

315

90

324

9

<15

9

<5

315

185

666

37

<15

18

9

315

265

954

75

23

26

13

315

360

1296

137

35

>30

18

400

155

558

6

<15

12

6

400

310

1116

34

<15

24

12

400

465

1674

75

29

>30

18

400

620

2232

133

40

>30

24

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

Nominal size Volume flow rate Δpt LWA vL
Nominal size Volume flow rate Δpt LWA 0.5 m/s 1.0 m/s
Nominal size Volume flow rate Δpt LWA L
Nominal size l/s m³/h Pa dB(A) m

160

20

72

9

<15

<5

<5

160

40

144

36

18

8

<5

160

60

216

81

31

13

6

160

80

288

144

41

17

8

200

35

126

10

<15

6

<5

200

70

252

37

22

11

6

200

105

378

82

35

17

9

200

140

504

145

44

23

11

250

55

198

9

<15

7

<5

250

110

396

35

20

14

7

250

165

594

77

33

21

11

250

220

792

137

43

28

14

315

90

324

9

<15

9

<5

315

185

666

37

22

18

9

315

265

954

75

33

26

13

315

360

1296

137

43

>30

18

400

155

558

6

<15

12

6

400

310

1116

34

22

24

12

400

465

1674

75

35

>30

18

400

620

2232

133

44

>30

24

All values apply to discharge angle 0°

L: Throw distance with isothermal operation


DUK-F, sound power level and total differential pressure

Nominal size Volume flow rate Δpt LWA vL
Nominal size Volume flow rate Δpt LWA 0.5 m/s 1.0 m/s
Nominal size Volume flow rate Δpt LWA L
Nominal size l/s m³/h Pa dB(A) m

100

8

28

6

<15

3

<5

100

15

54

33

<15

5

<5

100

20

72

61

<15

7

4

100

30

108

142

19

11

5

125

15

54

10

<15

4

<5

125

30

108

52

<15

9

<5

125

45

162

122

16

13

6

125

60

216

220

26

17

9

160

20

72

5

<15

4

<5

160

40

144

31

<15

9

<5

160

60

216

74

<15

13

7

160

80

288

134

20

17

9

200

35

126

6

<15

6

<5

200

70

252

33

<15

12

6

200

105

378

79

<15

17

9

200

140

504

143

24

23

12

250

55

198

6

<15

7

<5

250

110

396

34

<15

14

<5

250

165

594

80

18

22

11

250

220

792

145

28

29

14

315

90

324

6

<15

9

5

315

185

666

36

<15

19

10

315

265

954

77

22

27

14

315

360

1296

145

33

37

19

400

155

558

6

<15

12

6

400

310

1116

34

17

24

12

400

465

1674

81

30

35

18

400

620

2232

148

40

>30

24

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, excellent acoustic properties. 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 have an additional spherical casing and a casing with a spigot, raised edges or saddle connector.

For push fitting directly onto circular ducts or as a branch 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

Materials and surfaces

Fixed

  • Nozzle made of aluminium
  • Untreated surface


Adjustable

  • Nozzle and face cover ring made of aluminium
  • Spherical nozzle casing ring, casing, saddle connector and spigot made of galvanised sheet steel
  • Spherical nozzle casing made of plastic, UL 94, V-0, flame retardant, heat resistant up to 50 °C
  • Nozzle and face cover ring untreated
  • Spherical nozzle casing similar to RAL 9010, white
  • P0: Nozzle and face cover ring powder-coated RAL 9010, pure white
  • P1: Nozzle and face cover ring powder-coated, RAL CLASSIC colour

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

Sizing data

  • V _______________________ [m³/h]
  • Δpt _______________________ [Pa]

Air-regenerated noise

  • LWA _______________________ [dB(A)]

This specification text describes the general properties of the product. Texts for variants can be generated with our Easy Product Finder design programme.

00180442_0

 Type
DUK       Jet nozzle

 Discharge direction
F       Fixed
V       Adjustable

 Connection
       Only for variant V
       No entry: without spigot
A       Spigot to fit onto the end of circular ducts
K       Spigot to fit onto rectangular ducts
R       Saddle connector, specify duct diameter under

 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
       Internal electric actuator
E4       230 V AC, 3-point
E5       24 V AC, 3-point

 

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

 Circular duct diameter [mm]
Specify only for variant -R
200       Only for nominal size 100
250       Only for nominal size 125
315       Only for nominal size 160
500       Only for nominal sizes 160 –315
630       From nominal size 160
800       From nominal size 160

 Exposed surface
       No entry: untreated
P0       Powder-coated RAL 9010, pure white
P1       Powder-coated, specify RAL CLASSIC colour

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

Order example: DUK-V-K-E1/250/P1 – RAL 9016

Discharge direction

Adjustable

Connection

Spigot to fit onto rectangular ducts

Adjustment

230 V AC

Nominal size

250 mm

Exposed surface

White aluminium, similar to RAL 9006


Order example: DUK-F/250

Discharge direction

Fixed

Nominal size

250 mm


 

Variants, Dimensions and weight

  • Variants
  • Dimensions and weight

DUK-V

Variant

  • Adjustable jet nozzle for wall and bulkhead installation

Nominal sizes

  • 100, 125, 160, 200, 250, 315, 400

Parts and characteristics

  • Nozzle with acoustically optimised contours
  • Nozzle can be manually rotated inside the spherical casing by 360°
  • Screw fixing concealed by face cover ring

DUK-V-A

Variant

  • Adjustable jet nozzle for the connection to circular ducts

Nominal sizes

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

From nominal size 160 with actuator

Parts and characteristics

  • Nozzle with acoustically optimised contours
  • Nozzle can be manually rotated inside the spherical casing by 360°
  • Screw fixing concealed by face cover ring
  • Casing and spigot
  • The discharge angle can be adjusted from –30° to +30° with an electric actuator (optional)
  • E1, E2, E3: External actuator
  • E4, E5, E6: Internal actuator with spindle

Construction features

  • Spigot suitable for circular ducts to EN 1506 or EN 13180

DUK-V-K

Variant

  • Adjustable jet nozzle for the connection to rectangular ducts

Nominal sizes

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

From nominal size 160 with actuator

Parts and characteristics

  • Nozzle with acoustically optimised contours
  • Nozzle can be manually rotated inside the spherical casing by 360°
  • Screw fixing concealed by face cover ring
  • Casing with raised edges
  • The discharge angle can be adjusted from –30° to +30° with an electric actuator (optional)
  • E1, E2, E3: External actuator
  • E4, E5, E6: Internal actuator with spindle

DUK-V-R

Variant

  • Adjustable jet nozzle for the connection to circular ducts

Nominal sizes

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

From nominal size 160 with actuator

Parts and characteristics

  • Nozzle with acoustically optimised contours
  • Nozzle can be manually rotated inside the spherical casing by 360°
  • Screw fixing concealed by face cover ring
  • Casing and saddle connector
  • The discharge angle can be adjusted from –30° to +30° with an electric actuator (optional)
  • E1, E2, E3: External actuator
  • E4, E5, E6: Internal actuator with spindle

DUK-F

Variant

  • Fixed jet nozzle

Nominal sizes

  • 100, 125, 160, 200, 250, 315, 400

Parts and characteristics

  • Nozzle with acoustically optimised contours
  • Countersunk holes for screw-fixing the nozzle to a plane surface

DUK-V

Nominal size
ØD1
mm
L1
mm
L2
mm
ØD
mm
m
kg
100 146 11 76 98 0.4
125 169 11 85 123 0.5
160 200 11 94 158 0.8
200 257 16 110 198 1.4
250 302 16 146 248 2.5
315 384 23 153 313 4.0
400 467 24 177 398 6.0


DUK-V-A

Nominal size
ØD1
mm
L1
mm
L2
mm
ØD3
mm
ØD
mm
C
mm
m
kg
100 146 11 84 134 98 50 0.8
125 169 11 94 157 123 50 1.0
160 200 11 114 188 158 50 1.6
200 257 16 143 242 198 50 2.5
250 302 16 172 287 248 50 4.0
315 384 23 223 358 313 50 6.0
400 467 24 262 441 398 50 9.0


DUK-V-A-E*

Nominal size
ØD1
mm
L1
mm
L2
mm
ØD3
mm
ØD
mm
C
mm
m
kg
160 200 11 365 188 158 50 3.0
200 257 16 365 242 198 50 4.0
250 302 16 365 287 248 50 5.5
315 384 23 365 358 313 50 7.5
400 467 24 365 441 398 50 10.2


DUK-V-K

Nominal size
ØD1
mm
L1
mm
L2
mm
ØD3
mm
C
mm
m
kg
100 146 11 84 134 50 0.8
125 169 11 94 157 50 1.0
160 200 11 114 188 50 1.5
200 257 16 143 242 50 2.3
250 302 16 172 287 50 4.0
315 384 23 223 358 50 6.0
400 467 24 262 441 50 9.0


DUK-V-K-E*

Nominal size
ØD1
mm
L1
mm
L2
mm
ØD3
mm
C
mm
m
kg
160 200 11 365 188 50 3.0
200 257 16 365 242 50 4.0
250 302 16 365 287 50 5.5
315 384 23 365 358 50 7.5
400 467 24 365 441 50 10.0


DUK-V-R

Nominal size
ØD1
mm
L1
mm
L2
mm
ØD3
mm
C
mm
m
kg
100 146 11 84 134 50 0.7
125 169 11 94 157 50 0.9
160 200 11 114 188 50 1.3
200 257 16 143 242 50 2.2
250 302 16 172 287 50 3.7
315 384 23 223 358 50 5.9
400 467 24 262 441 50 8.7


DUK-V-R-E*

Nominal size
ØD1
mm
L1
mm
L2
mm
ØD3
mm
C
mm
m
kg
160 200 11 365 188 50 3.2
200 257 16 365 242 50 4.4
250 302 16 365 287 50 5.7
315 384 23 365 358 50 8.0
400 467 24 365 441 50 11.5


Circular duct diameter ØD5 [mm]

Nominal size
200
250
315
500
630
800
100 +
125 +
160 + + + +
200 + + +
250 + + +
315 + + +
400 + +


DUK-F

Nominal size
ØD1
mm
L1
mm
m
kg
100 138 94 0.1
125 161 112 0.1
160 225 122 0.2
200 265 153 0.3
250 315 187 0.4
315 400 224 0.6
400 485 287 0.9


DUK-V

Nominal size
ØD1
mm
ØD2
mm
Aeff

100 146 50 0.00190
125 169 64 0.00310
160 200 82 0.00500
200 257 108 0.00850
250 302 136 0.01350
315 384 174 0.02250
400 467 230 0.03850


DUK-F

Nominal size
ØD1
mm
ØD2
mm
Aeff

100 138 50 0.00174
125 161 64 0.00277
160 225 82 0.00469
200 265 108 0.00813
250 315 136 0.01289
315 400 174 0.02110
400 485 230 0.03683


Installation details, Basic information and nomenclature

  • Installation details
  • Basic information and nomenclature

Installation and commissioning

  • Ensure correct installation orientation
  • Installation directly onto circular ducts or as a branch 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


These are only schematic diagrams to illustrate installation details.

Principal dimensions

ØD₁ [mm]

Outer diameter of the face cover ring

ØD₂ [mm]

Smallest nozzle diameter (at the discharge opening)

ØD₃ [mm]

Diameter of the nozzle casing

ØD₄ [mm]

Nominal width of the circular duct, for nozzles with saddle connector

L₁ [mm]

Length of the face cover ring

L₂ [mm]

Casing length

m [kg]

Weight

Nomenclature

LWA [dB(A)]

Sound power level of the air-regenerated noise

V [m³/h] and [l/s]

Volume flow rate

Δtz [K]

Supply air to room air temperature difference

Δpt [Pa]

Total differential pressure

vL [m/s]

Air velocity at throw distance L (measured at the centre of the airflow)

L [m]

Throw distance with isothermal operation, no throw distance reduction

Aeff [m²]

Effective air discharge area


All sound power levels are based on 1 pW.

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For general question regarding products or services you can also call:
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