Oil lubricated single stage rotary screw technology 15-22kW (20-30HP) MATCH Your Air Demand MINIMIZE Your Energy Costs MAXIMIZE Your Efficiency Featuring professional grade components such as, a high efficiency TEAO motor, robust and high performing Allen Bradley inverter drive, an corrugated steel braided hoses, the variable speed Apex VS Series™ from Gardner Denver offers a fully enclosed, low noise compressor package that delivers the performance and reliability you demand.