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Oil-Free Screw Compressors

No Risk of Contamination with Drying Compressors

Are you running a production where there should be no risk of oil contamination to the product? This is where the oil-free air compressor comes in. Also known as a dry screw compressor it ensures that the risk of contamination is eliminated. 

Find out how the drying compressor achieves this below. We also have a range of oil-free air compressors available to suit your needs here. Check them out below.


ALUP's OF Oil-Free Compressor

The dry or "oil free" screw compressor compresses air without cooling the compression chamber. The compressor's operating temperature therefore rises to about 200°C, even at an operating pressure of 300 kPa. 

For normal industrial air pressure (about 700 kPa), the drying compressor must therefore compress the air in two stages and cool the compressed air between the compression stage.






ALUP Oil-Free Variable Speed Drive Compressor - 75 - 220 HP range - Class Zero

ALUP Oil-Free Variable Speed Drive Compressor - 75 - 220 HP range - Class Zero

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ALUP Oil-Free Variable Speed Drive Compressor | OF Series - 20-75 HP

ALUP Oil-Free Variable Speed Drive Compressor | OF Series - 20-75 HP

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Who we are and how we can help!

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!

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:

Extensive Product Line

We offer a broad array of products, from world class compressor brands, including a full range of rotary and reciprocating air compressors from ½ to 200 horsepower. We serve the compressed air needs of many industries such as the following:

Solutions

In our effort to prioritise the needs of our customers, we work hard to provide solutions. We continually introduce innovative products here at Ash Air to our Kiwi customers, so our end users can rely on us to meet evolving compressed air needs.

Support

We offer an extensive array of air compressor parts and services through our direct locations throughout New Zealand. Continued growth means our operations continue to operate on a national level.

In our effort to provide the best possible support, we offer the following remote monitoring, preventative maintenance, vacuum pump services and overhaul, compressor and pipework installations, hire fleet and leasing solutions, leak detection's and energy audits, and breakdown recovery and emergency air.

When considering new energy-efficient air compressors or an upgrade to more energy-efficient machinery, Ash Air can help you make the right choices for your business.


Read more from #expert corner!


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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. …


Using nitrogen is not about fully replacing CO2, but it can reduce their consumption of CO2 by close to 70%. Using nitrogen is about sustainability. Creating your own nitrogen is easy and will reduce the use of a greenhouse gas, which is better for the environment. It will also save you money as early as month one adding that savings to your bottom line. …


A question that is occasionally asked by our customers to Ash Air is 'what is the cost of compressed air?'  This article looks at the product costs involved with compressed air, as well as minimising the energy cost of compressors and cost allocation. When looking at these factors, we need to realise what causes dropped efficiency of your compressor, leading to increased costs of compressed air. …


You may have great fall protection measures in place to keep employees safe when working at height, but what about their co-workers below? Dropped tools and other falling objects are a major hazard – and one that isn’t always fully addressed.  …


Providing a safe working environment for operators is essential, especially when using pneumatic tools and compressed air. If there is a failure in the air network and the hose is not adequately clamped, the resulting whiplash could be devastating. Failure to follow best practice can result in injuries, associated production downtime and decreased productivity. …


A common questions asked is why do I need an air dryer for my compressor? Typically, air compressors produce water, and although the water can be drained, there can still be aerosol and vapour droplets that are present. This is because water cannoet be compressed. Water can damage your compressor by corroding the valves, pipes and machinery controls, which will cost you time and money to resolve. In the long run, the cost of a new compressor is a small price to pay compared to the loss of production that could potentially arise due to water damage in your compressor.





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Air compressors can fail for an assortment of different reasons: Normal wear and tear, lifespan and age of the unit, poor maintenance, power surge, install issues are just a few the come to mind. Check out this blog to find out our top 7 tips to ensure your compressor is looked after!  …


That cold, rainy, and in some places icey New Zealand winter is upon us, and with the following air compressor tips, your air system will be prepared with the preferred temperatures, despite the weather outside. Regardless of whether or not it actually snows or freezes up where you live, most winterisation service recommendations are also basic, solid maintenance procedures that will help extend the life and operational efficiencies of air compressors regardless of whether you live in Queenstown or Northland. …

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