500 - 600 minging or deeper pile carpets
Average 400 - 500 on carpets with standard 2 jet wand medium to high soil
300 carpets light clean quick one pass wanding
350 - 400 with 3" & 5"cfr handtools mostly no.2 65 jet with 1 or 2 slots open. More holes open = slight decrease in vac at fabric so more solution contact time = more aggressive cleaning and less arm ache in my experience tho then wise to do dry passes.
500 with 7.5" single jet cfr on stairs.
Using these psi' happily acheive sensible water useage ie 400 litres easy does a long day cleaning - with very acceptable drying times.
All the best
Stu