Hand Operated Drum Pump Max Outlet Pressure 5 psi Spout Connection Size 55/64 in Self-Priming Yes Metered No Includes Discharge Hose No Piston Material Polypropylene Features Delivers product on the up and down stroke with a zero friction easy pump design great chemical resistance and excellent compatibility with food products Seal Material Polyethylene For Use With 15 gal 30 gal Drums Lubricants Oils High Viscosity Fluids Food Products Dyes Mild Acids