I have used one of those pacific rim, Campbell-Hausfeld $149 HVLP spray rigs
to successfully spray shellac for a number of years and really don't have a
personal need an $800 HVLP rig.
Something tells me that these cheap guns are most likely matched to the
turbine that comes with it, but someone gave me brand new, un-opened
Craftsman HVLP gun a couple of years ago but I've not seen adapter/fittings
that would make it work with the big honking hose on this el cheapo HVLP