A rotary-screw compressor is a kind of gas compressor, such as for example an air compressor, that uses a rotary-type positive-displacement mechanism. They are generally used to displace piston compressors where large volumes of high-pressure air flow are needed, either for large commercial applications or to operate high-power air flow tools such as for example jackhammers and impact wrenches. For smaller rotor sizes the inherent leakage in the rotors turns into much more significant, becoming less useful than piston types for smaller sized volume air compressors.
The gas compression procedure for a rotary screw is a continuing sweeping motion, so there is very little pulsation or surging of flow, as occurs with piston compressors. This also allows screw compressors to be significantly quieter and produce much less vibration than piston compressors.
Ever-power Rotary Screw Atmosphere Compressor. 230 volt with built-in air dryer and 80 gallon tank.Unit offers 13857hours onto it. Unit was recently serviced with new separator screw air compressor filters, air filter, essential oil filter, and new essential oil. Unit has 
been examined and functions great. Free freight shipping. Feel free to get in touch with me with any queries you may have.
Item specifics
Rated Voltage: 230 V
Brand:Ever-power
Rated Horsepower:15 hp (11 kW)
Power Supply:Electric Airflow Volume (CFM): 60
Compressor Type:Rotary Screw
Air Tank Capacity: 80 gal
Motor Hp:10.5 to 30
Current Phase: 3 Phase