Thanks, Dave & Keith for the explanation. You mention that the
regulator comes after the device. Which raise another question; what
about a reversion wave or "water hammer" effect on the device? Since the
regulator is down-stream of the device, and will shut on/of to modulate
the pressure, some kind of wave should be traveling back up stream to
the device. If the regulator was up-stream of the device (but still
able to by-pass excess flow) wouldn't there be a more constant pressure
to the device? Your thoughts?
-Elon
(snip.)The other way is to run from the pump to the device and continue
on to a regulator that will send excess flow back to the tank and hence
regulate the pressure. . . The regulator closes off the return flow to
the tank as the device demands more flow and maintains the system
pressure. . . . the only non linearity you can get in this system is if
the pump capacity is much more than the regulator. Then the pressure
will creep up until demand from the device also uses some flow capacity
as well.
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