Hand Operated Pail 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 5 gal 6 gal Pails Lubricants Oils High Viscosity Fluids Food Products Dyes Mild Acids