pump placement

[alacheesu]

Skinnee isn't it the other way around?

When you say "flowrate", do you mean "velocity"? Because the velocity of the fluid will most definately change throughout a loop, depending on the diameter of the hose/fitting/passage. That's how nozzles work. The pressure (push from the pump) is constant but the flow (velocity of fluid) changes with the smaller diameter, speeding it up and slamming down onto the baseplate.

Anyone willing to back me up on that?

Volumetric flowrate, Q, is a function of velocity, v, and cross sectional area, A.
Q = v*A

Q is constant throughout the loop, but v and A can vary. A decrease in area (like a nozzle) would mean an increase in v.