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nES Single Stage Rotary Vane Pumps

Next generation single stage rotary vane pumps

Nes single stage rotary vane

An ideal solution for a broad range of requirements

Offering high reliability, low life cycle cost and proven performance, the Edwards nES single stage series represents the next advance in oil sealed rotary vane vacuum pumps for use in a wide of range industries and applications.

A compact design with low maintenance

  • The nES series is both robust and compact in design.
  • Low noise levels and vibration minimises environmental impact.
  • Easy to maintain and high productivity.

Optimised oil return system

The optimised oil return and separation system supports stable pumping performance and minimises oil loss.

Low lifecycle cost

Efficient cooled motors, optimised oil retention, low pump temperatures, high reliability and minimum maintenance provides excellent lifecycle cost compared to other single stage rotary vane pumps.
nes 750

Flexible and systemisation friendly

  • The nES range is available with boosters and combination kits to enable you to build a complete systemised ready-to-use unit.
  • Alternatively combination kits, together with the nES pump and EH mechanical booster, are available as a kit of parts that allows for easy on-site assembly.
  Units nES40 nES65 nES100 nES220 nES300 nES300S
Maximum displacement (50Hz) m3h-1 / cfm 44.0/25.9 59.0/34.8 98.0/57.4 200/117 280/165 330/194
Maximum displacement (60Hz) m3h-1 / cfm 53.0/31.2 71.0/41.8 117/68.9 240/141 340/200 385/227
Pumping speed (50 Hz) m3h-1 / cfm 38.5/22.7 54.0/31.8 87.5/51.5 179/105 240/141 284/167
Pumping speed (60Hz) m3h-1 / cfm 47.0/27.7 64.0/37.7 105/61.8 214/125 290/171 330/194
Ultimate vacuum without gas ballast mbar / torr 0.5/0.4 0.5/0.4 0.5/0.4 0.08/0.06 0.08/0.06 0.08/0.06
Ultimate vacuum with gas ballast mbar / torr 1.5/1.1 1.5/1.1 1.5/1.1 0.7/0.5 0.7/0.5 0.7/0.5
Inlet connection ISO / G 40 ISO-F / G1 ¼ 40 ISO-F / G1 ¼ 40 ISO-F / G1 ¼ 63 ISO-F / G2 63 ISO-F / G2 63 ISO-F/G2
Outlet connection ISO / G 40 ISO-F / G1 ¼ 40 ISO-F / G1 ¼ 40 ISO-F / G1 ¼ 63 ISO-F / G2 63 ISO-F / G2 63 ISO-F/G2
Max permitted outlet pressure bar (abs) 1.15  1.15  1.15  1.15  1.15  1.15
Max water vapour pumping rate (50Hz) kgh-1 / lbh-1 0.76/0.80 1.0/1.1 1.60/1.69 1.3/2.8 1.3/1.4 1.3/1.4
Max water vapour pumping rate (60Hz) kgh-1 / lbh-1 0.90/0.95 1.25/1.32 1.70/1.80 1.8/4.0 1.8/1.9 1.8/1.9
Dimensions (LxWxH) approximate  mm 540x284x303 586x320x314 721x400x319 984x606x407 1130x555x450 1117x565x450
Weight approximate kg / lb 67/148 86/190 104/230 180/397 244/539 244/539 
Motor protection rating   IP55 IP55 IP55 IP55 IP55 IP55
Motor rated power (50Hz) kW  1.3 1.8 3 4.4 5.5 6
Motor rated power (60Hz) kW / hp 1.3/2 1.8/3 3.6/5 5.5/7.5 6.6/10 7.2/10
Cooling   air air air air air air 
Noise level (50Hz) air/water dB(A) 58 60 61 69 72 72
Noise level (60Hz) air/water dB(A) 60 64 64 73 76 76
Oil refill capacity litre 1 2 2 7.5 8.5-11.5 8.5-11.5
Recommended oil Edwards ULTRAGRADE Performance 70 or ULTRAGRADE Endurance Extend 110  

 

Units

nES630

nES750

Maximum Displacement (50Hz)

m3h-1 / cfm

700/412

840/494

Maximum Displacement (60Hz)

m3h-1/ cfm

840/494

-

Pumping Speed (50Hz)

m3h-1 / cfm

640/377

755/444

Pumping Speed (60Hz)

m3h-1 / cfm

755/444

-

Ultimate vacuum without gas ballast

mbar / torr

0.08/0.06

0.08/0.06

Ultimate vacuum with gas ballast

mbar / torr

0.7/0.5

0.7/0.5

Inlet connection

ISO / G

100 ISO-F

100 ISO-F

Outlet connection

ISO / G

100 ISO-F

100 ISO-F

Max permitted outlet pressure

bar (abs)

1.15 

1.15 

Max water vapour pumping rate (50Hz)

kgh-1 / lbh-1

17/18

24/25

Max water vapour pumping rate (60Hz)

kgh-1 / lbh-1

24/25

-

Dimensions (LxWxH) approximate

mm

1563x909x740

1563x909x740

Weight approximate

kg / lb

760/1678

760/1678

Motor protection rating

 

IP55

IP55

Motor rated power (50Hz)

kW 

18.5

18.5

Motor rated power (60Hz)

kW / hp

18.5/25

-

Cooling

 

air/water

air/water

Cooling water flow (if applicable)

L/h

750

750

Noise level (50 Hz) air/water

dB(A)

72/72

75/72

Noise level (60 Hz) air/water

dB(A)

75/72

-

Oil refill capacity

litre

20-23

20-23

Recommended oil

Edwards ULTRAGRADE Performance 70 or ULTRAGRADE Endurance Extend 110

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