Airbrush expert advice required.

I know that in general terms a gravity fed brush requires less pressure to operate than a bottom fed one, but where do side feed brushes fit into the equation?

I am assuming that a side feed fitted with siphon bottles would be comparble to a bottom feeder & that a side feed with a gravity cup fitted would be comparable to a gravity fed?

Side fed with a cup above the feed are the same as gravity feed. Those with the cup below the feed are much the same as siphon.

Regardless of style, type or feed I still use the same range of air pressure for all…10-18 psi

Cheers Gerald.