Edwards, a pioneer in dry pumping technology, has more than 90 years experience in harsh process vacuum applications, including dust and process contaminants handling, with more than 150,000 pumps installed worldwide.
The GXS industrial dry screw pump incorporates innovative, patented design features that establish a new standard in dry pumping.


Features and Benefits

Designed for high reliability
Edwards patented screw-rotor design delivers excellent pumping-speed and is part of an advanced thermal management system that maximises pump performance and life of the seals, bearings and motor to ensure long pump service life.
Adaptable to a wide range of applications
GXS pumps may be supplied either alone, or with a high speed Roots booster to economically increase their capacity and ultimate vacuum.  In addition, Edwards offers a range of purge options, filters, catchpots, inlet isolation valves and silencers; which together with our special high flow purge and solvent flush accessory enabling the inside of the pump to be kept clean without disassembly.
Long service interval and easy swap-out
Long-life non-oxidising gearbox oil enables service intervals of up to 5 years to be achieved.  Quick-connect utility interfaces provide for rapid pump installation and exchange to improve factory up-time.
Low cost of ownership
Custom high-efficiency motor and drive system with advanced seal technology gives greatly reduced power consumption.  Minimal cooling water and purge gas requirements coupled with improved powertrain technology enables long service intervals and near maintenance-free operation to be achieved.
Minimum workplace and environmental impact
GXS pumps are incredibly compact.  Edwards advanced screw-rotor design provides for remarkably quiet, low vibration operation even without a silencer.
Simple to install and operate
GXS pumps are easily wheeled or fork-lifted into position, coupled to the process and services using the supplied mating connectors and run at the push of a button.
Ideal for integration into larger systems
GXS pumps and combinations are supplied with serial (RS232) communication and LAN-based webserving capability as standard.  Optional modules are available to add Parallel (digital I/O) and Profibus control functionality.
At your service
Edwards has highly skilled applications specialists who will advise on the optimal configuration for your process or application.


  • Solar

        Silicon crystal growing
        Lithium Ion battery manufacture

  • Freeze drying

        Food processing

  • Sterilisation


  • Coating

        Roll coating
        Web coating
        Optical lens coating
        Architectural glass coating

  • Metallurgy

         Heat treatment
        VIM and VAR

  • Leak detection
  • Food packaging
  • Vacuum chamber evacuation
  • High purity gas cylinder filling
Dane techniczne

GXS160 GXS160/1750
Peak Pumping Speed 160 m3h-1 1200 m3h-1
  (95 cfm) (706 cfm)
Ultimate Pressure 1.2 x 10-2 mbar 7 x 10-4 mbar
with Purge (9 x 10-3 Torr) (5.3 x 10-4 Torr)
Ultimate Pressure 7 x 10-3 mbar 7 x 10-4 mbar
without Purge (5.3 x 10-3 Torr) (5.3 x 10-4 Torr)
Full Load Power    
@ ultimate pressure 3.8 kW (5.1 hp) 5.1 kW (6.8 hp)
@ peak pumping load 5 kW (6.7 hp) 7.4 kW (9.9 hp)
Inlet connection    
Light/med duty ISO63 ISO100
Med duty + ISO100 ISO100
Exhaust connection NW40 NW40
Cooling Water    
  Flow 4 lmin-1 (1.1 galmin-1) 7 lmin-1 (1.9 galmin-1)
  Supply pressure (max) 6.9 bar (100 psig) 6.9 bar (100 psig)
  DP across pump (min) 1 bar (14.7 psig) 1 bar (14.7 psig)
  Temperature 5-40 °C (41-104 °F) 5-40 °C (41-104 °F)
Mass 305 Kg (672 lb) 475 Kg (1047 lb)
  Volume 0.7 l (0.2 gal) 1.4 l (0.4 gal)


Purge Gas*  

2.5-6.9 bar (36-100 psig)

  Light Duty

12 slm

  Medium Duty

18-52 slm

High flow purge/solvent flush supply pressure

2.5-6.9 bar (36-100 psig)

Operating Temperature

5-40 °C (41-104 °F)

Exhaust Back Pressure (Max)

1400 mbar (20 psia)

System IP rating



PFPE Drynert® 25/6

Monitoring & Control  

Front panel - Dashboard


Serial - RS232


Ethernet Webserver


Parallel I/O - MicroTim


Profibus DP


Pump Display Terminal (PDT)



*Purge Gas information
Light duty - shaft seal purge and high vac purge only
Medium duty - Shaft seal purge, inlet purge, variable gas ballast & exhaust purge (with exhaust pressure sensor)
Medium duty + - As Medium duty, plus High Flow Purge / Solvent Flush
Pliki do pobrania
GXS Dry Screw Vacuum Pump Brochure