ORIGINAL: bigtim
those devices were called the pre-val sprayer they were poor at best ( I used to sell them)they worked good enough if you had the method dialed in to perfection,far from user friendly, you can spray latex paint through a airbrush if needed, I have done several models with WB paint using a airbrush.
I seem to remember the painter constantly changing cans. Something was freezing up. He had three or for cans and would spray a bit, change cans spray a bit more, change cans, etc. Ithink they shot the whole living room in less time than it took to do the two doors.
Great infor on th paint.
Don