A rotary-screw compressor is a kind of gas compressor, such as an air flow compressor, that runs on the rotary-type positive-displacement mechanism. They are generally used to replace piston compressors where huge volumes of high-pressure air are required, either for large commercial applications or even to operate high-power air tools such as for example jackhammers and impact wrenches. For smaller sized rotor sizes the inherent leakage in the rotors becomes much more significant, becoming less practical than piston 
types for smaller volume air compressors.
The gas compression procedure for a rotary screw is a continuous sweeping motion, so there is very little pulsation or surging of flow, as occurs with piston compressors. This also allows screw compressors to end up being considerably quieter and produce much less vibration than piston compressors.
Ever-power Rotary Screw Air flow Compressor. 230 volt with built-in air dryer and 80 gallon tank.Unit has 13857hours on it. Unit was lately serviced with fresh separator filters, air filter, essential oil filter, and new essential oil. Unit has been examined and works great. Free freight oil-free air compress delivery. 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 Quantity (CFM): 60
Compressor Type:Rotary Screw
Air Tank Capacity: 80 gal
Motor Hp:10.5 to 30
Current Phase: 3 Phase