Heavy duty oil pumps designed specifically to transfer bulk oils, hydraulic oils, antifreeze, or antifreeze mixes. Pump has a non-corroding aluminum die cast body. It also includes an internal bypass valve to bypass flow if discharge pressure exceeds bypass valve setting. Built-in 2" bung adaptor for mounting directly onto drums and tanks. Can also be used to transfer used oil. Just fitting a screen onto the suction tube makes it effective for transferring used oil. Recommended use: Oils, Synthetic Oils, Antifreeze, Used Oils, Hydraulic Fluids, Cutting Oils, Oil Based Herbicides, Non-flammable Oil Based Solvents, Liquid Soap.