KE-Low Impulse

[Permeable material]



[Laser cut Orifice]

KE Inject


[Controlled Nozzle throw]


KE Fibertec develops and markets three main TBV product groups, which can all be supplied in three different geometries. In passive low impulse systems the air diffuses through a permeable material. In high impulse systems air is distributed solely through holes ( KE Inject® System ) or nozzles ( KE Direjet® System ). The hybrid models are a combination of the passive low impulse systems and the lasered inject holes or DireJet nozzles.


  • Principal features


  • The KE - Low Impulse textile ducting will distribute and filter cooled air completely without drafts. The air slowly diffuses through the permeable surface and the excellent air distribution ensures a good working environment free of drafts even in cold rooms.

  • Air flow is based on the displacement principle, in that cold air displaces warm air and convective currents over heat sources are very important. The system will only work if the fundamental physical laws are obeyed, so the system cannot be used for heating purposes. However, when sized properly it is possible to cool by up to 63 BTU / sqft floor area without drafts, and the system is condensation free even at a humidity rate over 90% RH.

  • Great care is taken when designing a system based on passive thermal displacement to take into account heat producing elements in the subject room.

  • The system is particularly well suited for the food industry, pharmaceutical industry, electronics industry and very relevant to applications that require high cooling and ventilation loads.

  • The specially designed KE-Trevira CS materials are woven in our our weaving mill and developed for long term durability. Even after repeated washing, permeability remains uniform with a maximum shrinkage rate of 0.5%.

  • Available configurations


  • Impulse System



    Impulse Installation



  • Uses of KE-Low Impulse Textile Ducting;
    • • High cooling
    • • Fresh air supply duct
    • • Low air movement
    • • Easy to clean and maintain ducting

  • Typical airflow & applications


  • KE Impulse



    KE Warehouse



  • Ideal solution for;
    • • Food industry duct
    • • Cold store ducting
    • • Laboratory duct
    • • Make up air supply ducting

  • Principal features


  • The KE - Inject Fabric Ducting comprises small holes in coated, airtight material. The delivery of air through the holes causes induction of the room air on a large scale, resulting in a relatively rapid reduction in the air velocity rate in the jet compared to the KE - DireJet Fabric Ducts.

  • The Inject system is specially suitable for industrial premises with typical room height of 10 - 20 feet where the need is for different supply air temperatures, ie heating, cooling or just replacement air.

  • In order to achieve a uniform and optimum air distribution throughout the whole room, the entire length of the inject duct is used as one long diffuser ensuring that air delivery will not be limited to particular zones. This system will significantly increase the ability to induce and mix room air better than traditional ventilation systems, and without the associated draft issues.

  • With the introduction of KE laser cut hole technology, our systems are able to combine the advantages of a passive low impulse system more active by adding rows of orifice holes to divert the air away from the near zone right under the fabric duct. KE Fibertec has well documented measurements of throw lengths etc relating to specific patterns of hole design.

  • Available configurations


  • KE Inject


    KE Installation


  • When to use KE-Inject Fabric ;
    • • Short to medium throw ducting
    • • High levels of mixing
    • • Fresh air supply ducts
    • • Low maintenance duct
    • • Visually appealing

  • Typical airflow & applications


  • KE Inject


    KE Installation


  • Ideal solution for;
    • • Small Swimming Pool ductwork
    • • Low height storage areas
    • • Small industrial applications
    • • Production facilities
    • • Temporary Structure ducting
  • Principal features


  • KE Fibertec is the only distributor of textile ducts that offers five different nozzle sizes Ø12, Ø18, Ø24, Ø48 and Ø60mm. The flexibility in the choice of nozzle size offers great benefits as the KE-DireJet Fabric Duct can then be used in virtually every type of premises that requires mixing ventilation, even in extremely large premises, such as high-bay warehouses or large sports arenas.

  • The nozzles can be supplied with nozzle plugs to block the airflow temporarily in certain zones. This is used most often in cases where the system's features need to be changed for a period of time, for instance, if the premises' use changes.

  • The conical nozzles are fitted in holes made of coated polyester fabric and are secured using a locking ring.The latest development of KE-DireJet Fabric Ductwork is called the KE-DireJet Vario. This is a multi-adjustable nozzle that allows the direction of the air jet to be freely adjusted up to 30 degrees in any direction relative to the nozzle's centreline.

  • Ducts are often used with different nozzle types and flow models in the same duct. This allows you to achieve the flow pattern and air intensity in the various zones exactly how you want. The conical nozzles are fitted in holes made of coated polyester fabric and are secured using a locking ring.

  • Available configurations


  • KE Direjet


    KE Installation


  • Using KE-DireJet Fabric Ductwork;
    • • Long throw duct
    • • Suitable for large spaces
    • • High supply temperature heating duct
    • • Low maintenance duct
    • • Visually appealing
  • Typical airflow & applications


  • KE DireJet


    KE direjet


  • Ideal solution for;
    • • Swimming Pool ductwork
    • • Industrial Ductwork Applications
    • • Warehouse ductwork & Storage Facilities
    • • Sports & Leisure Facilities
    • • Public Places

No matter how well the air is pre-filtered, a certain amount of dust particles will always end up in the supply air. How frequently the textile ducting is washed therefore depends, to a large extent, on the fabric’s dust holding capacity. KE Fibertec classifies the materials into two material groups according to the fabric’s dust holding capacity. We therefore use the acronyms HDC for materials with a high dust holding capacity and LDC for materials with a low dust holding capacity.


Low Dust Capacity materials are woven of multifilament warp yarns (lengthwise), i.e. yarns that are made up of 128mm thin cut fibres. These fibres are plain and smooth with a small surface compared to that of the staple yarns. In weft direction (crosswise), the same staple yarns are used as for the HDC fabric, however, the weaving-method is a more simple cotton bond with a much smaller surface than that of the HDC fabric.



In practice there will be no difference in strength or in durability of the two fabrics. Neither in permeability accuracy nor shrinkage.

The capability of the materials to carry dust is highly dependent on the structure of the weave. High Dust holding Capacity materials (HDC) are made of staple fibre yarns, i.e. yarns that are spun of 38 mm long thin fibres. The final yarn is made by twisting two yarns into one yarn that is used both in warp and weft direction (length- and crosswise of fabric). The result is a fabric that is capable of carrying a large amount of dust without blocking the air flow through the material. Such blocking would require washing of the textile duct to ensure the distribution of the calculated quantity of air at the calculated pressure loss.


KE Fibertec offers a variety of product types according to the relevant needs and type of installation. All low impulse systems and hybrid high impulse systems are basically dimensioned using materials with a high DHC, whereas we use materials with a lower DHC for very active systems (more than 30% of air through holes or nozzles). The reason for this is that the dust particles in these systems do not cause the same rise in pressure in the duct as most of the dust just penetrates the holes or nozzles.


KE Fibertec always carries out recommended tests on the dust holding capacity of textile materials. For instance, we have tested both HDC materials and LDC materials in accordance with EN 779 at the approved PALAS Institute in Germany. The results of these tests showed that the Dust Holding Capacity was up to 4 times higher for the HDC material compared to the LDC material.





























The KE FIbertec hardback technical book contains everything you would need to know about KE Fibertec and our range of textile ducting products. Please feel free to downlaod any of the 16 Chapters as titled below. If you would prefer to receive a hardback version of the book, please call our office and we will deliver one to you immediately.


01_smallfinal 02_smallfinal 03_smallfinal 04_smallfinal 05_smallfinal 06_smallfinal 07_smallfinal 08_smallfinal
Textile Based Ventilation Product Range Where our products are used From Dialogue to Ventilation Solution LOW - IMPULSE HIGH - IMPULSE HYBRID Design Consultancy
09_smallfinal 10_smallfinal 11_smallfinal 12_smallfinal 13_smallfinal 14_smallfinal 15_smallfinal 16_smallfinal
Room Categories Typical Layouts Sound Level Aspects of Design Materials & Colours Design Process Suspension Systems Washing & Maintenance Datasheets

The KE FIbertec hardback technical book contains everything you would need to know about KE Fibertec and our range of textile ducting products. Please feel free to downlaod any of the 16 Chapters as titled below. If you would prefer to receive a hardback version of the book, please call our office and we will deliver one to you immediately.


D- ALU® Suspension
D - LITE ALU® Suspension
D - SAFETRACK® Suspension
SINGLE WIRE Suspension
DOUBLE WIRE Suspension
SINGLE Safetrack
DOUBLE Safetrack








    smallfinal-8   smallfinal-9    
SAFE-360® Rings

Mounting instructions are included with the delivery of all our systems. To get an idea of how easy our mounting systems are, please download the pdf's below which are self explanatory.



Double / Single Suspension
( Safe Track Bulb )

D - Safetrack
( for flush mounting )

D - Safetrack
( for suspending )

Double Wire


Double / Single Suspension
( on drop rods )

Double / Single Suspension
( anodised supports )

D-Lite Alu
( for suspended ceilings )

Single Wire

Dubbo Pool Dubbo, NSW
Mingara Pool Mingara, NSW
West Pymble Pool Gym West Pymble, NSW
Ecofys Greenhouse Netherlands
Distribution Centre NSW, Australia

NSW Office

  •   U405/20 Bungan Street

            Mona Vale, NSW

  •   +61-2-9979-7299
  •   +61-2-9979-1145

VIC Office

  •   12 Jellico Drive

            Scoresby, Victoria

  •   +61-3-9753-2677
  •   +61-3-9753-4166