Quote Originally Posted by Petra View Post
The pressure drop incurred by the components used doesn't change the overall performance characteristics of a pump (there's a reason why you see intersecting curves in the first graph that Stew posted... The red curve represents how the pump performs (flow) at all head pressures attainable by the pump, the other curves represent the pressure drop of the cooling components used vs. flowrate, and the point of intersection represents the head pressure at which the pump operates and flowrate the pump attains given the components attached to it).

Hopefully that'll clear things up a little for you.
there we go! thats just what i needed, thanks a ton. and again, amazing info cathar