UL · KUL | TROX Malaysia Sdn Bhd.
KUL_img_01psd.png

KUL_img_04psd.png

Casing with flange holes (KUL-G)

KUL_img_05psd.png

Blades with restrictor

KUL_img_01psd.png
KUL_img_04psd.png
KUL_img_05psd.png

KUL 

For installation into ductwork

Non-return dampers prevent unwanted airflows against the intended airflow direction when the system is not in operation

  • Maximum differential pressure: 100 Pa

  • Casing with flange that fits rectangular ducts

  • Maximum width of 1600 mm, maximum height of 1615 mm

  • Available in standard sizes and intermediate sizes (in increments of 1 mm)

  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals

Optional equipment and accessories

  • Casing with flange holes

  • Installation subframe (only KUL-G)

  • Powder coating, RAL CLASSIC colour

General information

Application

  • Non-return dampers for installation in ducts

  • Prevention of unwanted airflows against the intended airflow direction when the system is not in operation

  • Blades close automatically when the system is shut down

  • Maximum differential pressure 100 Pa


Special features

  • Any intermediate sizes within the standard size range are available

  • Operating temperature -20 to 80 °C

  • Maximum differential pressure: 100 Pa

  • Non-return dampers are opened and closed by the airflow; no actuator is required

  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for attenuating the blade noise


Nominal sizes

  • B: 200, 400, 600, 800, 1000, 1200, 1400, 1600 mm (intermediate sizes: 201 – 1599 mm in increments of 1 mm)

  • H: 215, 315, 415, 515, 615, 715, 815, 1015, 1215, 1415, 1615 mm (intermediate sizes: 216 – 1614 mm, in increments of 1 mm); the design of the lowest blade and travel stop may differ depending on the damper height

  • Any combination of B × H


Variants

  • KUL: Casing without flange holes

  • KUL-G: Casing with flange holes


Parts and characteristics

  • Casing

  • Blades with low-friction bearings

  • Blade restrictors

  • Blade tip seals

  • Bottom travel stop (angle section)

  • Visible mullion from B = 997 mm


Accessories

  • Installation subframe for the fast and simple installation of mechanical self-powered dampers (only KUL-G)


Construction features

  • Casing, material thickness 1.25 mm

  • Blades, material thickness 1.0 mm

  • Casing with flanges on both sides

  • Additional side bar with fixing holes to accommodate the blade shafts and integral blade restrictors

  • Blade restrictors prevent the blades from opening beyond a certain angle


Materials and surfaces

  • Casing, mullion and travel stop (angle section) made of galvanised sheet steel

  • Blades made of formed aluminium

  • Blade shafts made of brass

  • Side bar made of PVC plastic

  • Blade tip seals made of polyester foam

  • Blade restrictors made of PC plastic

  • P1: Powder-coated, RAL CLASSIC colour


Maintenance

  • Maintenance-free as construction and materials are not subject to wear

  • Contamination should be removed as it may lead to corrosion and to increased closed blade air leakage

Technical information

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

  • Function
  • TECHNICAL DATA
  • QUICK SIZING
  • SPECIFICATION TEXT
  • ORDER CODE
Schematic illustration of KUL-G KUL_gc_02ai.png

1 Casing with flange holes (KUL-G)

2 Blades (closed)

3 Mullion from B = 997 mm

4 Travel stop (angle section)

5 Blades (open)

6 Blade restrictor

7 Blade tip seals

8 Side bar

Non-return dampers open and close automatically. When the system is in operation, the blades open when air flows. When the system is shut down, the blades close due to their weight. They safely prevent air from flowing against the intended airflow direction.

Quick sizing tables provide a good overview of the volume flow rates with an airflow velocity of 2.5 m/s. Intermediate values can be interpolated. Precise intermediate values can be calculated with our Easy Product Finder design program.

KUL, width 200 – 600 mm, volume flow rate at 2.5 m/s

H

B

200300400500600
[l/s][m³/h][l/s][m³/h][l/s][m³/h][l/s][m³/h][l/s][m³/h]
2151103961605762157742709723251170
315160576235846315113439514224751710
4152107563101116415149452018726252250
5152609363851386515185464523227752790
61531011164601656615221477027729253330
715360129653519267152574895322210703852
8154101476610219681529341020367212204392
101551018367602736102036721270457215205472
121561021969103276122043921520547218206552
1415710255610603816142051121770637221207632
1615810291612104356162058322020727224208712


KUL, width 800 – 1600 mm, volume flow rate at 2.5 m/s

H

B

8001000120014001600
[l/s][m³/h][l/s][m³/h][l/s][m³/h][l/s][m³/h][l/s][m³/h]
21543015485401944645232275527188603096
3156302268790284494534021100396012604536
415830298810403744125045001450522016605976
5151030370812904644155055801800648020607416
6151230442815405544185066602150774024608856
71514305148179064442150774025009000286010296
815163058682040734424508820285010260326011736
10152030730825409144305010980355012780406014616
121524308748304010944365013140425015300486017496
1415283010188354012744425015300495017820566020376
1615323011628404014544485017460565020340646023256


 

Differential pressure

v [m/s]

Δpt [Pa]

0.5

11

1

14

220
3

26

Specification text

Rectangular non-return dampers to prevent air from flowing against the intended airflow direction; for installation into internal walls and into rectangular ducts. Casing with flange holes if required. Ready-to-install component which consists of a casing, blades with low-friction bearings, blade restrictors and blade tip seals.


Special features

  • Any intermediate sizes within the standard size range are available
  • Operating temperature -20 to 80 °C
  • Maximum differential pressure: 100 Pa
  • Non-return dampers are opened and closed by the airflow; no actuator is required
  • Non-return damper with formed aluminium blades for normal requirements; blades are fitted with seals for attenuating the blade noise


Materials and surfaces

  • Casing, mullion and travel stop (angle section) made of galvanised sheet steel
  • Blades made of formed aluminium
  • Blade shafts made of brass
  • Side bar made of PVC plastic
  • Blade tip seals made of polyester foam
  • Blade restrictors made of PC plastic
  • P1: Powder-coated, RAL CLASSIC colour


Technical data

  • Nominal sizes: 200 × 215 to 1600 × 1615 mm
  • Volume flow rate range: 110 – 6460 l/s or 396 – 23256 m³/h at 2.5 m/s
  • Total differential pressure: 23 Pa at 2.5 m/s
  • Maximum differential pressure in closing direction: 100 Pa
  • Operating temperature: -20 to 80 °C


Sizing data

  • qᵥ [m³/h] volume flow rate
  • Δpt [Pa] total differential pressure
  • v [m/s] airflow velocity


KULG/800 × 1015/ER/P1 - RAL 9010
|||||
12345
1 Type
KUL
Non-return damper

2 Construction
No entry: casing without flange holes
G Casing with flange holes

3 Nominal size [mm]
Specify size (width × height)

4 Installation subframe
No entry: without installation subframe
ER With Installation subframe (only with construction G)

5 Surface
No entry: standard construction
P1 Powder-coated, specify RAL CLASSIC colour

Gloss level
RAL 9010 GU50
RAL 9006 GU30
All other RAL colours GU70

Order example: KUL-G/800×1015/ER/P1-RAL9010
TypeKUL
ConstructionCasing with flange holes
Nominal size [mm]Width 800, height 1015
Installation subframeWith installation subframe
SurfacePowder-coated RAL 9010, pure white

Dimensions and weight

  • DIMENSIONS AND WEIGHT
KUL
  • B: 200 – 1600 mm, intermediate sizes 201 – 1599 in increments of 1 mm
  • H: 215 – 1615 mm, intermediate sizes 216 – 1614 mm in increments of 1 mm



Flow cross section to calculate the airflow velocity

  • A = B × H

Unit of measure for B and H: m


Weight [kg]

H

B

2003004005006008001000120014001600
215233445681011
315234456791011
4153445678101113
5153456679111215
61545567810121317
71545678811131518
81556689913161719
10155679101115181920
121567710111317202022
141567811121518212224
161578811131719222426

Product details

  • PRODUCT DETAILS

KUL-G: Width, no. of flange holes

B

No. of holes n
200 – 3462
347 – 4963
497 – 6464
647 – 7965
797 – 9466
947 – 10967
1097 – 12468
1247 – 13969
1397 – 154610
1547 – 160011



KUL_G: Height, no. of flange holes

H

No. of holes n
215 – 3622
363 – 5123
513 – 6624
663 – 8125
813 – 9626
963 – 11127
1113 – 12628
1263 – 14129
1413 – 156210
1563 – 161511

Installation and commissioning

  • Horizontal airflow: vertical installation required
  • Vertical airflow: Installation into ducts with an upward airflow; horizontal installation
  • Straight upstream section required (at least B + H) on the discharge side of fans
  • Ensure a gradual start-up of fans to avoid a sudden pressure increase
  • Only for installation in internal spaces
  • For external walls the damper should be combined with a Type WG-KUL external weather louvre

The airflow downstream of a fan is characterised by strong turbulence, and there is no uniform velocity profile. As a consequence, the blades of the non-return dampers are not uniformly subject to the airflow, and this may result in individual blades becoming subject to forces that might lead to mechanical damage.
Safe operation requires a straight upstream section of at least B + H.

Downloads

product information

certificates

operation manuals

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Contact

Thank you for your message!

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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.: +60 6 678 8188 | Fax: +60 6 678 8288 (388)