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 Dyes, Food Products, High Viscosity Fluids, IBC Totes, Lubricants, Mild Acids, Oils, Adapter Connection Type MNPT