What are the advantages of a three-stage turbine compared to a two-stage one?

A 3-stage turbine can deliver a higher pressure. As a matter of fact, the increase in bar/psi will break the particles of the covering product into smaller drops, thus achieving a better and more precise finish. The advantage also results in the possibility of spraying thicker products with a correct dilution and without any waste. Moreover, you can move more rapidly on a surface compared to a turbine with a lower pressure since paint can flow better. A 2-stage turbine requires more know-how and experience in order to achieve the same results of a 3-stage turbine.