IPM Drum Length Stainless Steel 5:1 Transfer PumpIPM Drum Length Stainless Steel 5: 1 Transfer Pump The IPM 5: 1 is a heavy duty operated fluid Transfer Pump, IP Series, is designed for a 55 gallon drum, with the ability to transfer thicker viscosity and a wide span of materials. It is air operated with the positive displacement being completely uniform. Made with stainless steel. The IPM 5: 1 has a two ball piston design that provides uniform positive displacement. Its stainless steel design makes