to add some details:
the fillvalve is mounted to the pressure regulator, which itself is mounted to the pressure tank.This tank has
two chambers for the brake system and the air suspension.
The pressure regulator prioritizes in a way that all the air is routed to the brake pressure tank unless the
pressure exceeds 10,5bar (150psi).
Only from this point on the air suspension gets air.
The pressure regulator keeps the air compressor working in a way that the system pressure stays between 13,5 and 16,5bar.
And the main valve is adjusted in a way that the front axle gets 13bar (190psi)
So a 140psi compressor will never raise the car when attached to the fill valve.
It might raise the car when attached to port 1 or Port D of the main valve.
You will need something between 140psi and 190psi (depending on the weight of the car)
and the absense of major leaks.
regards,
Thomas