I'll say the same as I said elsewhere. What the hell use is a portable with twin vac motors and a pump more powerful than a lot of truckmounts?
Even at 1,000psi you're still not "pressure" cleaning a floor, you're rinsing off the chemicals you've put on it. Crank it up to 2,000 or more and you're in a different league.
I'd like to see the splatter from, for example, an Ashbys single jet hard floor wand when it's got 1200psi up its @rse. You'd spend more time wiping the walls down than cleaning the floor. Not sure if you could even use one like the Ashbys wand, the hose and trigger valve aren't rated high enough I don't think (will try and remember to look at mine tomorrow to find out).