Front and rear of the revolver head.
There are two discs spaced out by 20 mm. At the front side, I have the tubes coming out from the segments, which will be connected to the tubes from the wheel hub via silicone tubing.
From the rear side we can see some pins sticking out with small bearings, which will engage with the circular track of the main plate.
Motor driven levers will engage with these bearing at Z position and at the rotating station a segment will be pushed out by a few mm in order to rotate the disc with the nozzle plunger, by yet another stepper motor.
I'll stop here for a few days, attending some other business. However, I'll be reading any feedback.