New Atlas Copco GHS900VSD+ 25 HP Oil Flooded Rotary Screw Vacuum System

GHS 350 – 1900 VSD+ 1310 9058 30 Literature



  • Variable Speed Drive        
  • Elektronikon Mk5 Graphic Controller        
  • Plug and Play Design        
  • TEFC Premium Efficient Motor        
  • Inlet Air Filter        
  • IP54 Controls        
  • Synthetic Vacuum Fluid

20 HP Rated 510 ACFM with Ultimate Vacuum of 29.9 “Hg(v)

GHS 350-900 VSD+ Oil Sealed Rotary Screw Vacuum Pump

Standard Scope of Supply

The GHS 350 VSD+, GHS 585 VSD+, GHS 730 VSD+ and GHS 900 VSD+ are a range of air cooled; oil sealed screw variable speed vacuum pumps.  These pumps are the newest innovation on the market in terms of efficiency, environment, reliability and sustainability.



  • High Efficiency Cuts Costs


The GHS VSD+ series of vacuum pumps consume around 50% less energy than alternative technologies. They are the most energy-efficient oil-lubricated vacuum pumps on the market in the capacity range where other technologies, such as oil vane technology, start to become mechanically inefficient (typically >175 acfm) and expensive in terms of Capital Expenditure.


  • Energy Savings


Variable speed drive and set-point control, not typical features of a vacuum pump, lead to significant energy savings. Set-point control allows optimizing the energy you use to maintain your process vacuum level and maximize efficiency and performance. The minimum flow will be delivered to match your required vacuum level or speed.  Nothing is wasted! Additionally, a smart inlet valve provides modulating vacuum control in conjunction with the VSD to minimize energy consumption.


  • Easy, Fast Installation Saves Time and Money


The GHS VSD+ Series has one of the smallest footprints on the market.  The package is no larger than the footprint of a standard pallet. Everything you need is delivered in a single, neat enclosure.  With the inlet, discharge and electrical connections all located on the top of the machine, this provides a simple Plug-and-play installation.


  • Comfortable, Clean Working Environment


The GHS VSD+ Series offers one of the lowest noise levels among vacuum pumps available on the market today.  The market-leading oil retention means that the quality of the discharge air is optimal. This contributes to employee well-being, as this air is often breathed in.  Also, this helps avoid oil spills on the factory floor, which commonly occur with conventional oil-lubricated pumps. The result is a significantly cleaner working environment.


  • Low Failure Rate and Low Costs


The GHS VSD+ Series is designed for easy and infrequent maintenance: no vanes, no vane chatter, and no vane wear. Mean Time Between Failure rates are extremely low and no water is needed.


  • Stay Connected


A SMARTLINK is available to keep you effortlessly informed of pump performance and maintenance requirements. You can subscribe to the Service, Uptime or Energy version. Then the interventions are planned at the best time, abnormal parameters are detected earlier or you can benefit of energy monitoring.


  • Long-Lasting Components


The oil lubricated screw adapted for vacuum use is highly efficient and has outstanding performance that you come to expect from Atlas Copco.  The element life is significantly longer other vacuum technologies. The oil separator is designed for the most efficient oil coalescing with the lowest back pressure, which means less energy consumption.  This coupled with the patented design that never allows the filter media to be overloaded, contributes to a long oil separator life.


  • Optimal Flexibility


Unique water handling capability provides you with the versatility and flexibility you need. An electronically controlled gas ballast and temperature management allows optimal adaptation to your specific process.  The humid version can handle 100% water vapor at pressures above 29”HgV. The gas ballast is automatically switched and pre and post purge cycles are provided and controlled within the package. A cleaning cycle can also be adopted during shut down periods.


  • Hot-cool Zone Canopy


The GHS VSD+ Series features a canopy with a hot-cool design.  It isolates all heat producing and temperature critical components (motor, oil separator, and element) from all other components.  As cool running means higher reliability, this feature extends the lifetime of electronic components and leads to a longer Mean Time Between Failure. The cooling fan is a latest generation fan designed by Atlas Copco providing low noise and energy efficiency.


  • Versions to Match Your Application


Standard – Ideal for general applications where you need to maintain a pressure set-point.

Humid – Suitable for high water content duties, for applications such as plastics, clay molding, drying pipelines, salad cooling, freeze drying etc.  The unit provides tighter and higher temperature control through additional control logic.

Turbo – This fast evacuation version enables faster cycle times, translating to more production. This is ideal for food packaging, as well as cooling, freeze drying and general vessel evacuation applications.


Model Nominal Displacement (acfm) Ultimate Vacuum (in-HgV) Shaft Power


Noise level (dBa) Permissible Ambient Temperature
GHS350 VSD+ 230 29.9 7.5 51-65 32 to 115°F
GHS585 VSD+ 330 29.9 10 51-68 32 to 115°F
GHS730 VSD+ 430 29.9 15 51-73 32 to 115°F
GHS900 VSD+ 510 29.9 20 51-76 32 to 115°F


Model Dimensions

L × W × H

Oil Capacity


Inlet Connection Discharge Connection Weight
GHS350 VSD+ 51” × 35” × 43” 4.2 DN 80 2 ½” 1210
GHS585 VSD+ 51” × 35” × 43” 4.2 DN 80 2 ½” 1210
GHS730 VSD+ 51” × 35” × 43” 4.2 DN 80 2 ½” 1232
GHS900 VSD+ 51” × 35” × 43” 4.2 DN 80 2 ½” 1255


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