EPG #1 (Red pump model)

Figure 1:

Figure 2: (Orientation coils may have been composed of 400 turns, with #30 gauge wire.)

Figure 3:

Figure 4: Top view of PCB

Figure 5: EPG orientation pulsing coil board.

Figure 6:

Figure 7:

Red pump information (Little Giant B-500):

Pump was rated for 500GPH at a lift height of 1 foot. Specification for EPG was 50 inches/second of movement for slurry. 90 inches/second for gaseous medium. 

Parts list/source used in Max Miller's EPG replication: