Air Compressor Pump Lubrication Type Splash Lubricated Number of Stages 1 Maximum Output Power 3 hp Free Air Flow Rate @ Maximum Pressure 7.9 cfm @ 135 psi Number of Cylinders 2 Maximum Operating Pressure 135 psi Flywheel Diameter 10 in Flywheel Included Yes Construction Cast Iron Groove Section A Number of Grooves 1 Valve Type Reed Valve Material Stainless Steel Rotation CCW Stroke Length 2 in