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nES Single Stage Rotary Vane

nES Single Stage Rotary Vane

Primary vacuum

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.
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Superior performance

Deliver consistent pumping performance with excellent vacuum stability

High reliability

Designed to maximise process efficiency

Low lifecycle cost

Efficient cooled motors, optimised oil retention, low pump temperatures, high reliability and minimum maintenance

Compact and clean

Robust and compact design

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.

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.

Technical Specifications

UnitsnES40nES65nES100nES200nES300nES470nES570nES630nES750
Maximum Displacement 50Hzm3h-1 / cfm44.0/25.959.0/34.898.0/57.4180/106280/165470/277570/366700/412840/494
Maximum Displacement 60Hzm3h-1 / cfm53.0/31.271.0/41.8117/68.9230/130340/200570/366–840/494–
Pumping Speed (50 Hz)m3h-1 / cfm38.5/22.754.0/31.887.5/51.5170/100240/141400/236470/277640/377755/444
Pumping Speed (60Hz)m3h-1 / cfm47.0/27.764.0/37.7105/61.8200/118290/171470/277–755/444–
Ultimate vacuum without gas ballastmbar / torr0.5/0.40.5/0.40.5/0.40.08/0.060.08/0.060.08/0.060.08/0.060.08/0.060.08/0.06
Ultimate vacuum with gas ballastmbar / torr1.5/1.11.5/1.11.5/1.10.7/0.50.7/0.50.7/0.50.7/0.50.7/0.50.7/0.5
Inlet connectionISO / G40 ISO-F / G1 ¼40 ISO-F / G1 ¼40 ISO-F / G1 ¼63 ISO-F / G263 ISO-F / G2ISO100 / G3ISO100 / G3ISO100ISO100
Outlet connectionISO / G40 ISO-F / G1 ¼40 ISO-F / G1 ¼40 ISO-F / G1 ¼63 ISO-F / G263 ISO-F / G2ISO100 / G3ISO100 / G3ISO100ISO100
Max permitted outlet pressurebar (abs)1.15 abs1.15 abs1.15 abs1.15 abs1.15 abs1.15 abs1.15 abs1.15 abs1.15 abs
Max water vapour pumping rate (50Hz)kgh-1 / lbh-10.76/0.801.0/1.11.60/1.693.4/3.61.3/1.45.0/5.37.5/8.017/1824/25
Max water vapour pumping rate (60Hz)kgh-1 / lbh-10.90/0.951.25/1.321.70/1.805.4/5.71.8/1.97.5/8.0–24/25–
Dimensions (L,W,H) Approximate (tbc)mm540/284/303586/320/314721/400/3191002/535/4151130/555/4501305/863/7331305/863/7331566/989/7401566/989/740
Weight Approximate (tbc)kg / lb67/14886/190104/230142/313244/539480/1059550/1214760/1678760/1678
Motor protection ratingIP55IP55IP55IP55IP55IP55IP55IP55IP55
Motor power (50Hz)kW / hp1.1/1.51.5/2.03.0/4.04.5/6.05.5/7.5nov.15nov.1518.05.202618.05.2026
Motor power (60Hz)kW / hp1.5/2.01.8/3.03.6/5.05.5/7.56.6/10.013.02.2018–21/30–
Coolingairairairairair
Cooling water flow (if applicable)L / h–––––
Noise level (50Hz) air/waterdB(A)586061697272757275
Noise level (60Hz) air/waterdB(A)606464737675–75–
Oil refill capacitylitre12205.sept8.5-11.5202020-2320-23
Recommended oilEdwards ULTRAGRADE Performance 70