DTTU013 FTI Drum Pump Tube Exploded View Diagram Repair Parts Breakdown. Finish Thompson STTS-40-TC FDA Compliant TT Series Stainless Steel Sealed, Medium Viscosity/Flow Mid-Performance Barrel Pumps PDF Manual. Motor, Coupling Insert, Coupling Half, Bearing Assembly, Seal, Union Nut, Housing, Gasket, Lock Washer, Screw. Intake Tube, Impeller Assy W/Stainless Steel Pin, Compressor, Spacer Set, Shaft, Center & Bottom Bearing.