DPFS025 FTI Drum Pump Kit Exploded View Diagram Repair Parts Breakdown. Finish Thompson PF Series Stainless Steel Sealless, High Performance Tube PFS-40 with M6 Air Motor PDF Manual. Replacement Coupling Insert, Coupling Half, Bearing Assembly Kit, Lip Seal. Lock Washer, Screw, Intake Tube Assembly, O-Ring, Inner Tube, Shaft Sleeve, Bottom Bearing. Impeller Housing, Shaft, Impeller Assembly, Housing Cover.