nES Single Stage Rotary Vane Pumps

Next generation single stage rotary vane pumps

An ideal solution for a broad range of requirements

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.

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.

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.

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.

Technical specifications

  Units nES40 nES65 nES100 nES200 nES300
Maximum Displacement 50Hz m3h-1 / cfm 44.0/25.9 59.0/34.8 98.0/57.4 180/106 280/165
Maximum Displacement 60Hz m3h-1 / cfm 53.0/31.2 71.0/41.8 117/68.9 230/130 340/200
Pumping Speed (50 Hz) m3h-1 / cfm 38.5/22.7 54.0/31.8 87.5/51.5 170/100 240/141
Pumping Speed (60Hz) m3h-1 / cfm 47.0/27.7 64.0/37.7 105/61.8 200/118 290/171
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
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
Inlet connection ISO / G ISO40/ G1 1/4 ISO40 / G1 1/4 ISO40 / G1 1/4 ISO63 / G2 ISO63 / G2
Outlet connection ISO / G ISO40/ G1 1/4 ISO40 / G1 1/4 ISO40 / G1 1/4 ISO63 / G2 ISO63 / G2
Max permitted outlet pressure bar gauge 1.15 abs 1.15 abs 1.15 abs 1.15 abs 1.15 abs
Max water vapour pumping rate (50Hz) kgh-1 / lbh-1 0.76/0.80 1.0/1.1 1.60/1.69 3.4/3.6 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 5.4/5.7 1.8/1.9
Dimensions (L,W,H) Approximate (tbc) mm 623/332/296 706/367/312 762/434/317 1100/535/415 1143/573/450
Weight Approximate (tbc) kg / lb 67/148 86/190 104/230 142/313 244/539
Motor protection rating   IP55 IP55 IP55 IP55 IP55
Motor power (50Hz) kW / hp 1.5/2.0 2.2/3.0 3.0/5.0 5.5/8 7.5/10
Motor power (60Hz) kW / hp 1.8/3.0 2.6/4/0 3.6/6.0 6.6/10 9/13
Noise level (50Hz) dB(A) 58 60 61 69 72
Noise level (60Hz) dB(A) 60 64 64 73 76
Oil refill capacity litre 1 2 2 5-9 8.5/11.5
Recommended oil Edwards ULTRAGRADE Performance 70
  Units nES470 nES570 nES630 nES750
Maximum Displacement 50Hz m3h-1 / cfm 470/277 570/366 700/412 840/494
Maximum Displacement 60Hz m3h-1 / cfm 570/366 - 840/494 -
Pumping Speed (50Hz) m3h-1 / cfm 400/236 470/277 640/377 755/444
Pumping Speed (60Hz) m3h-1 / cfm 470/277 - 755/444 -
Ultimate vacuum without gas ballast mbar / torr 0.08/0.06 0.08/0.06 0.08/0.06 0.08/0.06
Ultimate vacuum with gas ballast mbar / torr 0.7/0.5 0.7/0.5 0.7/0.5 0.7/0.5
Inlet Connection ISO-F / G ISO100 / G3 ISO100 / G3 ISO100 ISO100
Outlet Connection ISO-F / G ISO100 / G3 ISO100 / G3 ISO100 ISO100
Max permitted outlet pressure bar gauge 1.15 abs 1.15 abs 1.15 abs 1.15 abs
Max water vapour pumping rate (50Hz) kgh-1 / lbh-1 5.0/5.3 7.5/8.0 17/18 24/25
Max water vapour pumping rate (60Hz) kgh-1 / lbh-1 7.5/8.0 - 24/25 -
Dimensions (L, W, H) Approximate (tbc) mm 1305/863/733 1305/863/733 1566/989/740 1566/989/740
Weight Approximate (tbc) kg / lb 480/1059 550/1214 760/1678 760/1678
Motor protection rating   IP55 IP55 IP55 IP55
Motor power (50Hz) kW / hp 11/15 11/15 18.5/26 18.5/26
Motor power (60Hz) kW / hp 13.2/18 - 21/30 -
Noise level (50 Hz) dB(A) 72 75 72 75
Noise level (60 Hz) dB(A) 75 - 75 -
Oil refill capacity litre 20 20 20-23 20-23
Recommended oil Edwards ULTRAGRADE Performance 70

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