A rotary-screw compressor is a kind of gas compressor, such as an atmosphere compressor, that runs on the rotary-type positive-displacement system. They are commonly used to displace piston compressors where huge volumes of high-pressure air are required, either for large commercial applications or even to operate high-power surroundings tools such as for example jackhammers and effect wrenches. For smaller sized rotor sizes the inherent leakage in the rotors becomes much more significant, getting less useful than piston types for smaller volume air compressors.
The gas compression process of a rotary screw is a continuing sweeping motion, so there is very small pulsation or surging of flow, as occurs with piston compressors. This also allows screw compressors to be considerably quieter and scroll air compressor 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 offers 13857hours onto it. Unit was lately serviced with brand-new separator filters, air conditioning filter, oil filter, and new essential oil. Unit has been tested and works great. Free freight shipping. Feel free to contact me with any questions you may have.
Item specifics
Rated Voltage: 230 V
Brand:Ever-power
Rated Hp:15 hp (11 kW)
Power Supply:Electric Airflow Volume (CFM): 60
Compressor Type:Rotary Screw
Air Tank Capacity: 80 gal
Motor Horsepower:10.5 to 30
Current Phase: 3 Phase