The Edwards ES range of pumps represents the advanced single stage oil sealed rotary vane pumps. The pump mechanism has been refined to produce a better quality of vacuum. The vacuum performance is highly stable, without any of the pressure fluctuations that are often seen in single stage pumps thanks to the optimised oil return system, improving product quality and giving consistent process results.

Features and Benefits

  • Runs cooler than comparable pumps, giving longer oil lifetime – low cost of ownership
  • Minimal oil emission, environment friendly
  • In-built ISO and BSP connections – ease of integration
  • Can be serviced on site by the user – higher productivity
  • Fully assembled package with EH boosters - suits a variety of performance requirement, simple and easy
  • Suitable for a wider range of industrial applications, with good water vapour handling
  • ­­Quieter than most comparable single stage rotary vane pumps
  • Optimised oil return system – improved product quality with consistent process results
  • Easy oil and filter changes – easy to maintain
Technical data  
Pumping Speed 50 Hz 275 m3h-1 /162 CFM
Pumping Speed 60 Hz 320 m3h-1 /188 CFM
Ultimate vacuum (total pressure) no gas ballast 0.08 mbar /0.06 torr
ultimate vacuum (total pressure) with gas ballast 2.0 mbar /1.5 torr
Inlet Connection ISO63/2''BSP
Outlet Connection ISO40/2''BSP
Max permitted outlet pressure 0.5 bar gauge
Max water vapour pumping rate (50Hz) 2.3 kgh-1 /5.1 lbh-1
Max water vapour pumping rate (60Hz) 3 kgh-1 /6.6 lbh-1
Dimensions 1083x517x462
Weight 180 kg /369 lb
Motor Protection rating IP55
Motor Power 50Hz 6 kW /8.0 hp
Motor Power 60Hz 7.5 kW / 10.0 hp
Noise level (50Hz) 69 dB(A)
Noise level (60Hz) 71 dB(A)
Oil refill capacity 5 litre
Recommended oil Ultragrade 20