A: Most of the plastics used by us can be glued. You need a cleaner and special adhesive, both of which you can get from us.
A: You can use the plastics PVC and PPs.
A: Different plastics can be bonded with each other by means of flanges. In this way, metal and plastic ducts can also be bonded. For connecting pipes, soft sleeves with tightening straps, provided that the temperature and pressure conditions in the pipe allow this.
A: The wall thicknesses to be used, depending on the channel dimension, as well as pressure and temperature dependence, can be found in DIN 4741 Part 5. In practice, smaller wall thicknesses are usually used, with stability being provided by means of inside or outside reinforcements. We will be happy to calculate the wall thicknesses for your specific application. The inner reinforcements are generally cheaper than external reinforcements. Since plastic channels are mainly used as a ventilation system and are therefore be used in the vacuum operation, inner reinforcements are the first choice here.
A: PPs pipes are exclusively manufactured with the wall thicknesses specified in the catalogue. There aren't different pressure levels with PPs pipes, unlike with PE pipes. Therefore, PPs pipes are not suitable for installation in soil.
A: Only PE is UV-resistant. This is why we recommend definitely using PE for outdoor use. PE is also the suitable plastic for outdoor use due to its temperature application range (minus 50°C to plus 80°C), while PVC and PPs-el are UV resistant with some reservations. However, these have the disadvantage that they are not appropriate for temperatures below 0°C.
A: Of course you can still use PVC ducts and pipes. PVC is actually indispensable for some applications. PVC is easy to handle and is more dimensionally stable than many other plastics.
A: Explosion protection for ventilators refers to the electrical equipment used (motors, switches). For ventilators to be protected completely from explosion, this is not enough, however. In such a case, the ventilator enclosure or the impellers or both of them must be made from electrically conductive plastics.
A: Explosion-proof motors must be enclosed in a flame-proof housing so that they can be controlled with a frequency converter. These engines may have very long delivery times.
A: No, because you need to have special engines. The motors installed in our ventilators are not suitable for this purpose.
A: We manufacture our ducts, fittings, fans, flaps etc. to order, because the numbers required for series production cannot be reached. However, the delivery times are relatively low compared to some series products (for instance, furniture, machines, engines or cars).
A: If you don't want to or can't install it yourself, speak to us.
A: You can get these devices from us, or rent them through us. As described on the service page, we lend these devices for 5 calendar days for free (order-related).
A: In the era of telecommunications and the Internet, we find that it doesn't make economical or ecological sense to have an external sales service. However, should you have specific demand for advice at any time, you can arrange an appointment with us.
A: Then write to us, because we always make an effort to publish the most frequently asked questions.