I have a choice of two hydraulic power units with specs as follows:
A. 2.2kW motor, 8lpm flow rate, 120 Bar pressure rating
B. 1.1kW motor, 2lpm flow rate, 200 Bar pressure rating
Using F=PA I assume pump B is capable of producing more force in the same system (albeit a lot slower!)
However, hearing the phrase "resistance to flow produces the pressure not the pump" many times gives me a nagging feeling.
Am I correct or is there something I'm missing?