Abstract: A compact, electronically operated, rotary positive displacement pumping device having a stator which functions as an electric motor stator and also as pump stator, a rotor or rotors which function as electric motor rotor or rotors and also as pump rotor or rotors, and a highly efficient and effective magnetic flux path which has low reluctance, said flux path being used in a magnetic drive arrangement to impart rotation to the rotor or rotors to create a pumping action.