Thanks for the post!

I'll be honest, I don't know a whole lot about FAIP North America (who manufactures AAA pumps) other than they are used on some of the units we service.

We are an AR (Annovi Reverberi) dealer so I could recommend material regarding AR pumps, like the info at the below link:

www.arnorthamerica.com/articles.html

Other solid pump manufacturers are Comet, Giant, CAT and General:
www.pressure-washer-buyers-guide.com/pressure-washer-pump.html

One thing you want to stay away from are the Chinese knock-off pumps, which you see on a lot more units nowadays.
Many of these pumps use aluminum or pot metal-type of materials and are far inferior to the OEM AR pumps and others.

- MTR