This is the first an only time I used a spraypainter. It works really well. The spray nozzle in the package is size 517 which works well for ordinary paint. I painted my house using silicate paint which is quite thick why I used a 523 spray nozzle. The 517 was ok for the primer though.
The pump is easy to use and to clean, but the instructions in this package is terrible. Very hard to understand and lots of information is missing. Fortunately the pump is very similar to some Graco models, Graco 495 for example, and there is several videos on YouTube on how to use and clean that.