I posted in error on this thread.

Restricting the flow on the pressure side will increase pressure....subsequently increase the work load (energy consumption) of a constant speed pump.
increased pressure does not increase the work load.

Restricting the pressure side results in less flow and actually less work (energy) not more as I stated above.

I helped get this thread pretty far off track. Continued discussion about pump flow, etc. should probably head for the china shop.


Back to the original posters question. I run my skimmer ball valves in a half closed position constantly. I do it to increase volume to a dedicated suction line.