Paul, I'm not sure the compressor analogy holds up here. Pump cavitation is
when the inlet pressure drops below the vapor pressure of the fluid being
pumped (at least locally), and the resulting vapor disrupts the flow. A turbo
compressor can surge and it can stall, but it can't cavitate.

In my experience with pumps (admittedly I'm not an expert) we have always
focused on the inlet side to combat cavitation. BTW, I think that running
glycol / water should help reduce cavitation as the boiling point is higher.

Jon Lauter
Rotary Power Marine Corporation

 
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