ISO connection valve. Used to connect air between the tractor or the drive unit and the semi-trailer-trailer, on all recently built vehicles. On the back, it is threaded female 16x1.5 (fig. A). The yellow/red colour of the cover is used to distinguish the incoming air from the return air, when connecting to those without a valve.

Characteristics:

• On the back, it is female threaded 16x1.5