If you need pressure, not just flow.. a peristaltic pump will work well.
This pump uses rollers to continuously compress a loop of tubing to act as
piston-like motion for positive pressure flow.

Eventually the tubing loop needs to be replaced.. how often depends upon the
type of tubing used.

In choosing a pump suitable for your application, you'll need a fairly
acurate "guess" of the flow rate. The flow rate is related to the nozzle
size, which can usually be adjusted/replaced.

--
Cheers,
WB
..............


"Robert Macy" wrote in message
...
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?