Air-operated pumps from Grainger can help transfer and dispense a wide range of viscous fluids such as diesel fuel and motor oil, corrosive chemicals, flammable liquids and more. Find corrosion-resistant stainless steel pumps that can pump antifreeze, mild solvents, water-based fluids and varnishes from 55-gal. drums or can be wall- or tank-mounted as a stub pump. Shop Grainger first when you need air-operated pumps to help dispense industrial fluids.