Backup pump data

Lighthouse Marine - Circulation

Lighthouse Marine - Circulation

http://www.lhmarine.co.nz/userfiles/...p%20curves.jpg

The last chart shows the pumps 8+ GPM capacity, dwarfing the 10 and 30.

Got to remember that the pressure on the edge of a automotive pump, Johnson pump, and or boat propeller is durn near a great suction. The boat is cavitating 2' below a lake (1+ PSIG) thats probably 70 degrees F or so and its boiling. Lots of work has gone into the US Sub propeller to keep it from cavitating hundreds of feet below the sea's surface.

Microsoft’s bird’s eye view catches Navy propeller | Ogle Earth

What is Supercavitation?

and finally: Cavitation - Wikipedia, the free encyclopedia

Woody