northstar air compressor pump - 2-stage, 3-cylinder, 14.9 cfm at 90 psi northstar high-quality northstar belt-driven pump works with gas or electric motors and features a full cast iron pump for longevity, low vibration technology (lvt) for smooth running and long life, a w-type cylinder orientation for consistent cooling and bearings on both ends of crankshaft for excellent support. also features intercooler to cool compressed air for lower moisture content. flywheel diameter (in.): 12.5, max. psi: 175, cfm at 90 psi: 14.9, dimensions l x w x h (in.): 28 x 22 5/8 x 22, required power: 5 hp electric or 9 hp gas motor, stages: 2, total cylinders: 3