On Mon, 22 Aug 2011 12:30:15 -0700 (PDT), Robert Macy
wrote:

OT, but you guys know where to find everything!

Anybody know where to get a 'recirculating' pump system that sucks up
liquid [mainly water based] and jumps the pressure up into the
40-60psi or even more range and can supply several gallons per minute
[first pass estimate] against back pressure, like attempting to block
the exit nozzle. Hand held ON/OFF nozzle with a bore on the range of
3/16 to 1/4 inch, or 5/16 [1/8 inch is too small and suspect 3/8 is
too large] Like an air brush nozzle.

Need to be portable, 110vac, and run quietly.

Everything self contained: plastic/rubber tubes, pickup apparatus to
place in bottom of liquid container, hand held trigger nozzle with
push button ON/OFF control, and pump,

Any idea where to get this?
You could check with Grainger. Look for a soda machine pump. These
are bronze gear pumps and can be bought with a motor attached.
Eric