National-spencer | zee line lever-action drum pump this lever-style pump is lightweight and corrosion resistant. Pump can be used on 15 to 55 gallon drums with 2″ or 1-” drum bungs. Pump dispenses at 12 oz. Per stroke flow rate and features a stainless steel lift rod and telescoping suction tube. polypropylene body pump features viton/polypropylene seals for water-based fluids, chemicals and acids.