[Danimal16]

Head loss is not a algebraic relationship to pipe diameter. I need to find my King's handbook.


Head is head it is based upon the height of the column. The diameter of the tank would only give you the rate of which you would draw that water surface down, in other words how long you could sustain that column or fluid surface.

As far as cavitation, and the hydraulics guys would need to look at the system geometry, it depends on how far down the line from the change in direction or constriction in the line before the flow returns to laminar, if at all. This could assist with the pump impeller not cavetating. Placement of the pump could impact its efficiency.