The cover consists of a carbon fiber plate that was manufactured using the prepreg process. This has industrial quality, is very hard-wearing and has a flawless look of the fabric.
The cover is already prepared with adhesive tapes, so all you have to do is remove the protective film and attach the cover to the water outlet.
The flow during flight presses the cover against the wing and thus ensures that the water outlet is covered in a streamlined manner. However, when the valves are opened, the water pressure is higher, so the water can be released freely during the flight (regardless of the flight speed). The system has been used on various models for many years and has therefore matured in practice.