Quote:
Originally posted by bigben2k
Exactly.
Your overall pressure would be higher, but it has no effect on pumping, other than the flow restriction.
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Close, but not quite Ben. Depending on one's setup it may have no effect or it may have a very substantial effect. True cavitation does not occur often, but when it does raising the overall system pressure is one sure-fire way to eliminate it. Generally speaking, most people that think they have cavitation merely have air in the lines. Generally speaking those that truly have cavitation merely need to clean up their suction line to the pump by eliminating nearby elbows or increasing the line size. Nonetheless, raising overall system pressure also eliminates the chance for the pressure to drop to the flash point.