Rotary air compressors are positive displacement compressors. The most common rotary air compressor is the single stage helical or spiral 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 basically 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.

Rotary screw air compressors are easy to maintain and operate. Capacity control for these compressors is accomplished by variable speed and variable compressor displacement. For the latter control technique, a slide valve is positioned in the casing. As the compressor capacity is reduced, the slide valve opens, bypassing a portion of the compressed air back to the suction. Advantages of the rotary screw compressor include smooth, pulse-free air output in a compact size with high output volume over a long life.

The oil free rotary screw air compressor utilizes specially designed air ends to compress air without oil in the compression chamber yielding true oil free air. Oil free rotary screw air compressors are available air cooled and water cooled and provide the same flexibility as oil flooded rotaries when oil free air is required.

If you’re looking for a rotary screw air compressor for sale, then NPS Compressed Air Solutions is the perfect place to turn. Known for its simplicity, efficiency, and ability to run 24 hours a day without overheating, the rotary screw air compressor has gained in popularity for industrial uses. At NPS Compressed Air Solutions, we offer a wide range of rotary screw air compressors for sale in both new and used conditions. Available in different horsepowers as well, each rotary screw air compressor for sale from NPS Compressed Air Solutions is built to provide you with the performance and quality you deserve.

The benefits of choosing a rotary screw air compressor for sale from NPS Compressed Air Solutions are virtually infinite; not only are we an authorized Ingersoll-Rand dealer, allowing us to offer their high-quality rotary screw air compressors for sale at the lowest prices in the market, but we also offer preventive maintenance programs to keep your air compressor running at full efficiency. Furthermore, our experienced and skilled systems specialists can assist you with every step, from selecting which rotary screw air compressor for sale is right for you and your needs, to conducting an air audit, to servicing your compressor and beyond.

For more information on the benefits of selecting a rotary screw air compressor from NPS, call or e-mail us today.

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