"jusme" fired this volley in news:1ks2jg.mn2.19.1
@news.alt.net:

I wonder what vehicle may have the highest flow pump. Should I just
consider that the larger the vehicle, the faster the flow rate?

Actually, translate that just a bit from "largest" to "heaviest".

Heavy vehicles normally require large steering forces for the large (lots
of contact area) tires they have to twist to and fro.

But you might be surprised at the 3600rpm output of a simple passenger
car pump.

LLoyd