Porter Cable Portable Air Compressor Click HERE for more information! Single stage, oil lubricated, Twin-V cast iron pump. Heavy duty 1.6 HP, 120-240 volt induction motor. Tank Size: 30 Gallon. SCFM at 40 PSI: 6.2 & SCFM at 90 PSI: 5.3 Maximum Pressure: 135 PSI. 6.2 CFM at 40 psi and 5.3 CFM at 90 psi. 1.6 running horsepower.