Forces exerted by automotive fuel pump

[13BeastREW]

I originally began asking this in the automotive forum but its come to my attention that this forum may be more appropriate. I working on a computer simulation of the pressurization of a fuel system by its fuel pump and fuel pressure regulator.

At this point I'm decided that I need to figure out the forces being generated by the electric fuel pump running at a constant voltage. What variables need to be taken into account to be able to calculate these forces versus the pressure regulator and in result determine the amount of pressure currently in the system?

 

[13BeastREW]

Does it seem reasonable to assume that an automotive fuel pump will operate in the range of 1500 to 2000 RPM? or are the vane's much for efficiant as to facilitate sufficient flow rates at between 500 - 1000 RPM?