2-Stage Ring Compressors Phase Three Output Power 11.5 hp Maximum Operating Pressure 244.3 in wc Maximum Flow Rate 222 cfm Maximum Vacuum 185 in wc Voltage 230/460V AC Inlet Size 2 in Inlet Type NPT Inlet Gender Female Outlet Size 2 in Outlet Type NPT Outlet Gender Female Current Rating 31.3/16.9 A Frequency 60 Hz Housing Material Aluminum