Screw Air Compressor. Screw Air Compressor Manufacturer in India. Screw Air Compressor Manufacturer in Mumbai. We are Airo-Tech Enterprises, We are Manufacturer into Screw air compressors are positive displacement compressors. The most common Screw air compressor is the single stage helical or curved lobe oil flooded screw air compressor. These compressors consist of two rotors within a casing where the rotors compress the air internally. There are no valves. These units are principally oil cooled (with air cooled or water cooled oil coolers) where the oil seals the internal clearances. Since the cooling takes place right inside the compressor, the working parts never experience extreme operating temperatures. The rotary compressor, therefore, is a continuous duty, air cooled or water cooled compressor package.