In this video I am going to open up a 40 years old DC motor pump of General Electric. It has an RPM of 3450 and the voltage rating is 12 volts. I have tested it with two different input voltages and the maximum current peak was 21 Amperes with an input voltage of 32 volts DC.
This is a centrifugal pump with a very high pressure. It is still in good working condition despite being very old.
The motor used to drive the pump is a DC compound motor.

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