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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ALUP LARGO 76 Oil Injected Screw Compressor

ALUP LARGO 76 Oil Injected Screw Compressor

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ALUP LARGO 90 Oil Injected Screw Compressor

ALUP LARGO 90 Oil Injected Screw Compressor

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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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Atlas Copco AWC, AWC A & AWS A Series | Single Stage Liquid Ring Vacuum Pumps

Atlas Copco AWC, AWC A & AWS A Series | Single Stage Liquid Ring Vacuum Pumps

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Atlas Copco AWD & AWD A Series | Two Stage Liquid Ring Vacuum Pumps

Atlas Copco AWD & AWD A Series | Two Stage Liquid Ring Vacuum Pumps

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Atlas Copco AWS Series Single Stage Liquid Ring Vacuum Pumps

Atlas Copco AWS Series Single Stage Liquid Ring Vacuum Pumps

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Atlas Copco DB Side Channel Blowers

Atlas Copco DB Side Channel Blowers

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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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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@™ 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.


Learn more about Rotary Screw Vacuum Pumps ›