This subcollector makes the connection between the valve and the flexible pipes. All seams were glued inside so that this subcollector is airtight. An air conductor (Ø50) or a beveled corner (Ø63 / 70/90) was provided to avoid turbulences and reduce air resistance.
Placement of the sub-collector: if the drilling has been carried out, the sub-collector with the spiral-bent channel, or a specially designed plastic connection tube VB125 S-COL, can be placed through the thickness of the concrete.
Composition
Subcollector made from KTL coated steel (5µm); thanks to this KTL coating, the subcollector is resistant to the corrosive components of the screed and concrete
The KTL coating is also dirt and dust repellent, making it ideal for ventilation applications