Available as air-cooled or water-cooled models, Kaeser CSG-2, DSG-2 and FSG-2 series oil-free rotary screw compressors include a two-stage compressor air end. IE3 premium efficiency motors with PT 100 sensors measure and monitor winding temperatures. Features include stainless-steel rotors, a hydraulic inlet valve, fiber-free pulsation dampeners, and built-in heat recovery options.