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One-stage vs Multi-stage Compressor

Did you know that there are one-stage compressors and multi-stage compressors? Well know you know! Learn more about each of these compressors and discover which one is more suitable for your production needs

As your partners in compressed air, we strive to ensure you have all the knowledge available to get the best out of your compressed air system. Become an expert today!

The one-stage compressor 

A one-stage compressor has one or more cylinders each of which compresses air from atmospheric pressure to operational pressure.

Multi-stage compressor 

A multi-stage compressor  has two or more cylinders connected in series in which air is gradually compressed to the final pressure.
Between steps, the compressed air is cooled with air or water.
Thereby improving efficiency, which achieving a much higher pressure than from the one-stage compressor.


Who we are and how Ash Air can help your business!

Ash Air has been around in New Zealand since 1979, and we’ve grown into a nationwide company with international support and a reputation for quality and reliability.We look after all things compressed air for your business!

  • Reciprocating, Screw, air compressors
  • Vacuum pumps
  • Nitrogen
  • An extensive line of air treatment components

Ash Air's range of Chicago Pneumatic, Alup, Pneumatech, and Quincy compressors are used extensively around the world in industries ranging from oil and gas to food, automotive and farming, and we bring you these world class compressors here in the land of the long white cloud.Our technicians are compressed air equipment experts and are dedicated to addressing customer needs. Supported by a 13 locations nationwide, Ash Air offers one of the widest selections of compressed air equipment and parts available today in New Zealand.

Reliability and Efficiency

With Ash Air compressors, you can count on reliability and high performance for even the most demanding applications. We focus our efforts on the following:

  • Increasing uptime
  • Reducing unexpected repairs
  • Reducing energy consumption
  • Improving the cleanliness of compressed air


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Just like any other equipment, a compressed air installation also requires the necessary maintenance work during its entire lifespan. Even though maintenance costs are only about 5 to 10% of a machine's annual operating costs, failure to budget for maintenance can have potentially disastrous consequences.


The air dyer is one of the most ignored cooler in the system. A dirty condenser will cause water in the lines, or worse it will cause complete dryer failure.