Nitrogen & Oxygen Gas Generators

Since 1966, Pneumatech has provided industry-leading compressed air treatment and on-site gas generation solutions to customers across the globe. Our on-site nitrogen and oxygen generators provide you with premium, industrial gas without the cumbersome handling of bottles, cost-efficient, easy and at the purity level required by you.


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Onsite gas generation tailored to your needs

Experience top-notch on-site nitrogen and oxygen generation in New Zealand with our advanced Pneumatech N2 and O2 gas systems. Say goodbye to the hassle of handling gas bottles, enjoy cost-effective solutions, and ensure the purity levels tailored to your specific needs in the industrial sector.

Talk to our team today about nitrogen and oxygen gas generators Talk to our team today about nitrogen and oxygen gas generators

Nitrogen Generators:

 Empower your operations with the intelligent choice of producing nitrogen on-site. Opting for an on-site nitrogen generator in New Zealand is a superior, cost-efficient, and sustainable alternative to traditional gas deliveries. Switch from Liquid Nitrogen to On-Site Generation and Cut Your Operating Cost Down.

Oxygen Generators:

Experience the cutting-edge on-site oxygen generation offered by Pneumatech, a leading air treatment and gas generation expert, proudly presented by Ash Air in New Zealand. Utilizing advanced zeolite technology, our oxygen generators efficiently separate gases, ensuring purity levels of up to 95%. From compressed air applications to critical environments like veterinary clinics and medical facilities, our machines deliver unparalleled performance. Elevate your business with a dependable O2 supply, reduce costs, and enhance operational excellence through Pneumatech's expertise, products, and services. Discover the seamless synergy of cutting-edge oxygen solutions for optimal reliability and efficiency, exclusively offered by Ash Air in New Zealand.

Explore our Industrial Gases Selection

Browse our online catalogue and discover Pneumatech Nitrogen and Oxygen Generators  for sale in New Zealand. We're excited to offer only the best on the market in NZ. Get in touch today and learn why Ash Air have over 40 years in the business, with thousands of happy customers throughout the country.

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Air Compressors & Treatment

From powerful rotary screw compressors to reliable piston air compressors, we offer a comprehensive range. Explore top-quality air compressors and treatment solutions in New Zealand with Alup and Chicago Pneumatic. Enhance your compressed air system with our refrigerated and desiccant air dryers. Trust us for sales and service of premium air compressors in NZ.

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Vacuum Pumps & Blowers

The team at Ash Air has an extensive range of top quality vacuum pumps and equipment, including rotary vane pumps, liquid ring pumps, claw pumps and screw pumps that are low maintenance, energy-efficient, reliable, affordable and hard working.

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Nitrogen & Oxygen Gas Generators

Our nitrogen gas generators offer excellent all-in-one solutions, with technologically-advanced systems, are very convenient, space saving and easy to install. Our nitrogen generators have impressive control and monitoring capabilities with very reliable purity settings and long-lasting membrane technology.

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Atlas Copco DRB VSD+ and DRB booster pumps

Atlas Copco DRB VSD+ and DRB booster pumps

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Atlas Copco DSS 065-100 dry scroll vacuum pump

Atlas Copco DSS 065-100 dry scroll vacuum pump

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Atlas Copco DVS Dry Rotary Vane Vacuum Pumps | DVS 5-140

Atlas Copco DVS Dry Rotary Vane Vacuum Pumps | DVS 5-140

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Atlas Copco DZM VSD⁺ A Series Dry Multi Claw Vacuum Pump | 1200 - 1600 VSD+

Atlas Copco DZM VSD⁺ A Series Dry Multi Claw Vacuum Pump | 1200 - 1600 VSD+

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Atlas Copco DZS Dry Mono and Multi Claw Vacuum Pump | 65 - 300

Atlas Copco DZS Dry Mono and Multi Claw Vacuum Pump | 65 - 300

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Atlas Copco DZS VSD⁺ Dry Claw Vacuum Pump | 100 - 400 VSD+

Atlas Copco DZS VSD⁺ Dry Claw Vacuum Pump | 100 - 400 VSD+

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Atlas Copco Fixed speed dry screw vacuum pumps DWS 200-500

Atlas Copco Fixed speed dry screw vacuum pumps DWS 200-500

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Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 350 - 900 VSD+ Series

Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 350 - 900 VSD+ Series

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Atlas Copco GVD Stage Two Stage Oil Sealed Rotary Vane Vacuum Pump | GVD 40-275 series

Atlas Copco GVD Stage Two Stage Oil Sealed Rotary Vane Vacuum Pump | GVD 40-275 series

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Atlas Copco GVS A Single Stage Oil Sealed Rotary Vane Vacuum Pump | 16 - 630 A

Atlas Copco GVS A Single Stage Oil Sealed Rotary Vane Vacuum Pump | 16 - 630 A

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Atlas Copco GVS VSD+ Series Single Stage Oil-Sealed Rotary Vane Vacuum Pumps with VSD

Atlas Copco GVS VSD+ Series Single Stage Oil-Sealed Rotary Vane Vacuum Pumps with VSD

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Atlas Copco HEX@™ Controller

Atlas Copco HEX@™ Controller

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Atlas Copco Intelligent dry screw vacuum pump with VSD technology  DWS 450-750 VSD+

Atlas Copco Intelligent dry screw vacuum pump with VSD technology DWS 450-750 VSD+

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Atlas Copco LRP VSD+ Intelligent Liquid Ring Vacuum Pump | 700 - 1000 Series

Atlas Copco LRP VSD+ Intelligent Liquid Ring Vacuum Pump | 700 - 1000 Series

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Atlas Copco ZRS 250-4200 Series

Atlas Copco ZRS 250-4200 Series

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Ceiling Service Systems

Ceiling Service Systems

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Chicago Pneumatic CPVSd 10 Oil Injected VSD Driven Screw Compressor with 270 L Receiver + Dryer

Chicago Pneumatic CPVSd 10 Oil Injected VSD Driven Screw Compressor with 270 L Receiver + Dryer

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Chicago Pneumatic CPVSd 15 Oil Injected VSD Driven Screw Compressor with 270 L Receiver + Dryer

Chicago Pneumatic CPVSd 15 Oil Injected VSD Driven Screw Compressor with 270 L Receiver + Dryer

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Chicago Pneumatic CPVSd 21 Oil Injected VSD Driven Screw Compressor with 500 L Receiver + Dryer

Chicago Pneumatic CPVSd 21 Oil Injected VSD Driven Screw Compressor with 500 L Receiver + Dryer

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Chicago Pneumatic CPVSd 29 Oil Injected Screw Compressor with Variable Speed Drive (VSD)

Chicago Pneumatic CPVSd 29 Oil Injected Screw Compressor with Variable Speed Drive (VSD)

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Chicago Pneumatic CPVSd 40 Oil Injected Screw Compressor with Variable Speed Drive (VSD)

Chicago Pneumatic CPVSd 40 Oil Injected Screw Compressor with Variable Speed Drive (VSD)

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Chicago Pneumatic CPVSd 50 Oil Injected Screw Compressor with Variable Speed Drive (VSD)

Chicago Pneumatic CPVSd 50 Oil Injected Screw Compressor with Variable Speed Drive (VSD)

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Chicago Pneumatic Light Tower CPLB 6 LED

Chicago Pneumatic Light Tower CPLB 6 LED

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Chicago Pneumatic Light Tower CPLT H6 LED

Chicago Pneumatic Light Tower CPLT H6 LED

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Chicago Pneumatic Line Filters 720 - 40,500 l/min

Chicago Pneumatic Line Filters 720 - 40,500 l/min

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Chicago Pneumatic Mobile Diesel Compressor CPS 375

Chicago Pneumatic Mobile Diesel Compressor CPS 375

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Chicago Pneumatic Mobile Diesel Compressor T110-7

Chicago Pneumatic Mobile Diesel Compressor T110-7

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Chicago Pneumatic Mobile Diesel Compressor T130-7

Chicago Pneumatic Mobile Diesel Compressor T130-7

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Chicago Pneumatic Mobile Diesel Compressor T175-7

Chicago Pneumatic Mobile Diesel Compressor T175-7

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Chicago Pneumatic Mobile Diesel Compressor T190-12

Chicago Pneumatic Mobile Diesel Compressor T190-12

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Chicago Pneumatic Mobile Diesel Compressor T190-7

Chicago Pneumatic Mobile Diesel Compressor T190-7

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Chicago Pneumatic Mobile Diesel Compressor T250-7

Chicago Pneumatic Mobile Diesel Compressor T250-7

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Chicago Pneumatic Mobile Diesel Compressor T75-7

Chicago Pneumatic Mobile Diesel Compressor T75-7

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Chicago Pneumatic Mobile Diesel Generator CPDG 14

Chicago Pneumatic Mobile Diesel Generator CPDG 14

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Chicago Pneumatic Mobile Diesel Generator CPDG 20

Chicago Pneumatic Mobile Diesel Generator CPDG 20

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Chicago Pneumatic Mobile Diesel Generator CPDG 40

Chicago Pneumatic Mobile Diesel Generator CPDG 40

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Chicago Pneumatic Mobile Diesel Generator CPDG 60

Chicago Pneumatic Mobile Diesel Generator CPDG 60

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Chicago Pneumatic Portable Diesel Compressor CPS 3.5 RED ROCK

Chicago Pneumatic Portable Diesel Compressor CPS 3.5 RED ROCK

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Chicago Pneumatic Portable Diesel Compressor CPS 5.0 RED ROCK

Chicago Pneumatic Portable Diesel Compressor CPS 5.0 RED ROCK

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CPS 3.5 G RED ROCK Portable Diesel Compressor (with Generator)

CPS 3.5 G RED ROCK Portable Diesel Compressor (with Generator)

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Manifolds & Pressure Reducing Sets

Manifolds & Pressure Reducing Sets

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Medical Air & Vacuum Systems

Medical Air & Vacuum Systems

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Medical Gas Terminal Units

Medical Gas Terminal Units

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Pneumatech AC Series - Cycling Dryers

Pneumatech AC Series - Cycling Dryers

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Pneumatech AD Series - Non-Cycling Refrigeration Dryers

Pneumatech AD Series - Non-Cycling Refrigeration Dryers

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Pneumatech BA 15-310 HE – Breathing Air Purifier Dryers

Pneumatech BA 15-310 HE – Breathing Air Purifier Dryers

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Pneumatech Cycling Dryers – AC VSD Series

Pneumatech Cycling Dryers – AC VSD Series

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Pneumatech Nitrogen Generator PPNG 6-68 S (up to 99.999% purity; up to 148 m3/h)

Pneumatech Nitrogen Generator PPNG 6-68 S (up to 99.999% purity; up to 148 m3/h)

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Pneumatech PB 210 - 635 HE Blower Purge / Zero Purge Adsorption Dryers | 360-1080 m3/hr

Pneumatech PB 210 - 635 HE Blower Purge / Zero Purge Adsorption Dryers | 360-1080 m3/hr

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Pneumatech PB 700-6350 HE Blower Purge / Zero Purge Adsorption Dryers | 1188-10800 m3/hr

Pneumatech PB 700-6350 HE Blower Purge / Zero Purge Adsorption Dryers | 1188-10800 m3/hr

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Pneumatech PB 760 - 3390 S Heated Purge Adsorption Dryers | 1296-5760 m3/hr

Pneumatech PB 760 - 3390 S Heated Purge Adsorption Dryers | 1296-5760 m3/hr

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Pneumatech PH 700 - 2950 HE Welded Vessel Heatless Adsorption Dryers | 1188-5040 m3/hr

Pneumatech PH 700 - 2950 HE Welded Vessel Heatless Adsorption Dryers | 1188-5040 m3/hr

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Pneumatech PH 90 - 690 HE Extruded Profile Heatless Adsorption Dryers

Pneumatech PH 90 - 690 HE Extruded Profile Heatless Adsorption Dryers

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Pneumatech PMNG Series - Membrane Nitrogen Generator

Pneumatech PMNG Series - Membrane Nitrogen Generator

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Pneumatech PPNG 1-12 High Pressure Nitrogen Skids HE

Pneumatech PPNG 1-12 High Pressure Nitrogen Skids HE

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Pneumatech PPOG 1-120 PSA Oxygen Generators

Pneumatech PPOG 1-120 PSA Oxygen Generators

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Pneumatech PPOG 2-18 HE PSA Oxygen Generators

Pneumatech PPOG 2-18 HE PSA Oxygen Generators

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pompetravaini TRMX 257 Close-coupled

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PPOG 1-120 PSA Oxygen Generators

PPOG 1-120 PSA Oxygen Generators

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Screwguard Rotair Oil 5L

Screwguard Rotair Oil 5L

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Our Resources

We're committed to offering our customers an extensive range of knowledge-based resources to support you at every stage of your journey. Whether you're just starting your research or making your final purchasing decision, Ash Air is here to support you. 


Contact Us Contact Us Ash Air Expert Corner Blog Ash Air Expert Corner Blog Our News and Stories Our News and Stories

Read our blog


Choosing the right assist gas in laser cutting: nitrogen or oxygen


Controlling your nitrogen purity made easy


How is Nitrogen Used in the Coffee Industry?


Our customers say...



"At Fisher & Paykel Appliances, compressed air and vacuum systems are an important part of our operations. Ash Air understands our needs and can solve our problems very swiftly. They have maintained our systems to a high standard. The service and support from Ash Air over the years has proven to be reliable, professional and genuine. They are highly skilled real people and we are happy to be working with them."

Shane Farrington Engineering Manager, Fisher & Paykel Appliances



"Ash Air has been pivotal in assisting Air New Zealand Engineering in our energy saving efforts. They provide us with constant improvement programs that include high quality equipment & service, Air Quality Testing, Leak Detection & Repairs and point of use improvements. Air New Zealand Engineering do our best in servicing large jet airframes and Ash Air has always been there to support our compressed air efficiency requirements." 
Harvey Roberts Senior Facilities Manager Property & Infrastructure, Auckland Jet Base, Air New Zealand Engineering

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