Want to decide to spray machine brand and model above all, the material that each spraying equipment can spray has certain limit, not be omnipotent.
Additional, coating is involved more extensive, want to know what you call coating to point to so is which kind? Emulsioni paint? The paint? Or materials with solids?
Regularly check the spraying equipment, equipment wear will appear above problems.
Seat adhesion occurs, thus no pressure! Or coating viscosity is too high, or consistency is too high, the choice of equipment is not appropriate, there will be no pressure!