Does this unit remove moisture?
Yes. It does have an integral moisture filtration system
Is there a way to set maximum pressure output or notification when set pressure is achieved? I use 3000 psi tanks.
Whats the cfm it puts out?
Is the nardi a 3 stage or 4 stage how many amps does it draw
What is the rebuild time
I have a big air tank 6 liters (350cu inches?) how much would it take to this compressor fill it?
What adapter do I need to connect to a standard male foster fitting?
It is female European DIN with male 1/8 bspp, you would screw your foster fitting onto the male threads.
Is this also clean breathable air for diving?
Not breathable, unless you get a filter from Nardi and install it
What specific type of oil should I use? Is the Amazon DeWalt D55001 full synthetic a good choice?
I would refer to the manufacturers recommendations
Is it 220 or 110 ,plug in
It requires a 240 v ac single phase 30 amp circuit. at 240v ac it draws 16.5 amps FLA times 1.25 for continuous duty which equals 20.625 amps so next available breaker size will be 30 amps. there is a 80% deduct on the breaker load ampacity witch is 24 amps. the feeder wire size will need to be #10 awg with a #12 awg ground.