We produce our duct, as well as all other products exclusively in Germany. The wall materials are produced in Germany as well and meet highest quality demands according to the latest technological stand. Each material batch is tested for quality assurance (quality assurance system according to ISO 9001). Therefore, we can guarantee ideal processing and perfect quality material.
The surface is smooth and reduces the air resistance through a double-sided PVC coating of the fabric. Therefore, our ducts are air tight, consume less energy and are less expensive than products coated on one side.
The resistance (flat ducts) corresponds to the lambda value of hydraulic, smooth pipe with an optimal installation and connection.
Our ducts additionally feature a high tear strength at the same m2 weight through the special wall materials; they are cold and heat resistant (-25 C° up to +70 C°) and are partly homogeneously antistatic. This means that the antistatic is consistent and even still exists unchanged after years. The longevity of the antistatic is fulfilled.
Our antistatic qualities of the types A and B are LOBA approved! However, there is more to come! In addition, the LOBA approval includes a hygiene and filter test, which certifies the safety of material combined with breathing masks by the fire department in case of fire.
The LOBA approval is not only a simple certificate for certain properties! It was developed in the 1970s together with the Deutsche Steinkohle AG and was the starting point for many DIN standards in the field of special ventilation systems, which we meet up to this day!
Our quality features at a glance:
Technical data of our duct wall materials
|Denier||1100 dtex||1100 dtex||1100 dtex||1100 dtex|
|Total weight min. g/m²||550g||700g||600g||800g|
|Breaking stress in N/5cm, warp and woof approx.||1750/1500||2500/2500||1500/1500||2500/2500|
|Tear growth resistance in N, warp and woof approx.||400/400||500/500||400/400||500/500|
|Flammability ISO 3795||<100mm||<100mm||*||*|
|Oxygen index after DIN EN ISO 4589-2||–||–||27||27|
|Homogeneous antistatic||no||no||<1×106 Ω||<1×106 Ω|
* Qualities A and B with LOBA approval for the German coal and conformity declaration of the EXAM, Bochum, according to ATEX Directive 94/9/EC
The permissible operating pressure for all diameters can be calculated on the basis of the tear resistance for every quality named above.
We will gladly inform you about the quality of our products in a consultation. Please contact us!