DEFP037 FTI Drum Pump Tube Exploded View Diagram Repair Parts Breakdown. Finish Thompson EFP-27DEF EF Series Plastic Sealless, Economy Barrel Pumps PDF Manual. Shaft Replacement Kit, Motor, Coupling Insert, Coupling Half, Bearing. Seal, Head, Flat Washer, O-Ring, Spout, Nut, Inner Tube, Center Support. Diffuser w/PTFE Bushing, Shaft Sleeve, Intake Tube, Impeller, Diffuser Cover, Nozzle, Wall Mount Bracket.