Screw Vacuum Pumps

The GHS VSD+ series are a range of intelligent, oil-sealed rotary screw vacuum pumps with Variable Speed Drive (VSD) technology. A paradigm of innovation, practicality, economy, and energy efficiency, we have now taken the GHS VSD+ series to the next level with the revolutionary HEX@TM vacuum pump controller.


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Equipped with HEX@TM – next generation vacuum control

With HEX@TM you can monitor and control your pump from anywhere and at any time. You can receive feedback and review pump operating status, vacuum levels and upcoming scheduled events for your vacuum system.

Talk to our team today about screw vacuum pumps Talk to our team today about screw vacuum pumps

Sustainable productivity

Thanks to built-in efficiency

Increased efficiency

State-of-the-art screw technology, Variable Speed Drive (VSD) and innovative motor design combine to produce a leap forward in efficiency

Quiet operation

Noise level is far below that of comparable technologies

Reduced environmental impact

Due to ultra-high oil retention at all operating pressures

Ready to use

With the plug & play solutions

Online Shop

Shop online for quality air compressors, fittings, air tools, air regulators, pressure switches, and maintenance kits for NZ businesses and DIYers. Hassle-free, secure payment with Afterpay, nationwide delivery.

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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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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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SpiralAIR SPR 20 Multi Oil-free (8 bar version)

SpiralAIR SPR 20 Multi Oil-free (8 bar version)

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SpiralAIR SPR 8 Oil-free (8 bar version)

SpiralAIR SPR 8 Oil-free (8 bar version)

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SprialAIR Scroll Compressors SPR 2-30 Series

SprialAIR Scroll Compressors SPR 2-30 Series

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WISAIR 20V - 75V Oil-Free Screw Compressor - Inverter Version

WISAIR 20V - 75V Oil-Free Screw Compressor - Inverter Version

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WISAIR 40 - 75 Oil-Free Screw Compressor - Fixed Speed Version

WISAIR 40 - 75 Oil-Free Screw Compressor - Fixed Speed Version

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Chicago Pneumatic CPM 5.5 Oil Injected Screw Compressor with 200L Receiver + Dryer

Chicago Pneumatic CPM 5.5 Oil Injected Screw Compressor with 200L Receiver + Dryer

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Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 1402 - 2002 VSD+ Series

Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 1402 - 2002 VSD+ Series

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Chicago Pneumatic CPM 9 M Oil Injected Screw Compressor with 200L Receiver + Dryer

Chicago Pneumatic CPM 9 M Oil Injected Screw Compressor with 200L Receiver + Dryer

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Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 3800 - 5400 VSD+ Series

Atlas Copco GHS VSD+ Oil Sealed Rotary Screw Vacuum Pump | 3800 - 5400 VSD+ Series

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Chicago Pneumatic CPA 10 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

Chicago Pneumatic CPA 10 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

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Chicago Pneumatic CPA 15 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

Chicago Pneumatic CPA 15 Oil Injected Screw Compressor with 270L Receiver + Dryer (8 bar version)

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Chicago Pneumatic CPA 20 Oil Injected Screw Compressor with 500L Receiver + Dryer (8 bar version)

Chicago Pneumatic CPA 20 Oil Injected Screw Compressor with 500L Receiver + Dryer (8 bar version)

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Chicago Pneumatic CPBg 29 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

Chicago Pneumatic CPBg 29 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

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Chicago Pneumatic CPBg 40 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

Chicago Pneumatic CPBg 40 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions available

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CPBg 50 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions avaliable

CPBg 50 Oil Injected Screw Compressor | 7.5, 8.5, 10, 13 bar versions avaliable

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Oil Sealed Screw Vacuum Pumps

Ideal for diverse markets

Our Atlas Copco screw vacuum pumps are ideal for a range of applications in plastics, glass, bottling, canning, wood, packaging, printing and paper, meat packaging and many more. The GHS 350-900 VSD+ is an optimal solution when a dedicated pump is required in the production area/

Low lifecycle costs

For replacement pumps, the GHS VSD+ Series offers a very low lifecycle cost (including service activities and energy). Generally the payback time against existing oil-lubricated or multiple dry vane installations will be much less than two years, considering energy consumption and maintenance costs alone, without taking into account the ease of installation.

VSD+ for potential energy savings of 50%* or more

In almost every production environment, the need for vacuum fluctuates depending on different factors such as process changes, the time of day, week or even month. Extensive measurements and studies of demand profiles show that there are many substantial variants with regards to vacuum demand. *In most applications compared to traditional fixed speed vacuum technologies based on measurement with our Vbox energy audit tool. Fixed Speed Vacuum Pump Energy Investment Maintenance GHS VSD+ SAVINGS 50%*

Why Atlas Copco Variable Speed Drive (VSD) technology?

  • Potential energy savings of 50%* or more with an extensive flow range (20-100%)
  • Reduced electrical installation costs (fuse and cable size)
  • Integrated HEX@â„¢ graphic controller controls the motor speed and high efficiency frequency inverter
  • Eliminates peak current penalty during start-up experienced with stop-start machines

Energy savings

VSD and set-point control, lead to significant energy savings. Set-point control allows you to optimize the energy you use to maintain your process vacuum level and thereby optimize your process efficiency and performance. The lowest possible flow will be delivered to match your required vacuum level or speed – nothing is wasted.

Game-changing Variable Speed Drive Technology For Vacuum Pump


Dry Screw Vacuum Pumps

At Ash Air, our dedication to customer satisfaction and environmental responsibility drives our innovation forward. We prioritize investments in advanced technology, such as our line of dry screw vacuum pumps. These pumps offer numerous benefits, including increased productivity, reduced energy consumption, user-friendly controls, simplified maintenance, and lowered operational costs.

Clean technology

Our range of dry screw vacuum pumps are friendly on the environment – with no contaminated oil to dispose. Dry technology means no exhaust emissions and a clean, reliable performance.

Clever technology

Our DHS VSD+ and DWS VSD+ range of dry screw vacuum pumps feature Variable Speed Drive (VSD) technology. The pump adjusts vacuum flow as per your process demands and optimizes energy consumption leading to substantial energy savings.

Connected technology 

Benefit from always-on connectivity and remote monitoring with ElektronikonTM for advanced pump monitoring such as status, running and stopped hours, programmable timers, set point control among other parameters.


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