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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.

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

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

Technical Specifications

	Units	nES40	nES65	nES100	nES200	nES300	nES470	nES570	nES630	nES750

Maximum Displacement 50Hz	m3h-1 / cfm	44.0/25.9	59.0/34.8	98.0/57.4	180/106	280/165	470/277	570/366	700/412	840/494
Maximum Displacement 60Hz	m3h-1 / cfm	53.0/31.2	71.0/41.8	117/68.9	230/130	340/200	570/366	–	840/494	–
Pumping Speed (50 Hz)	m3h-1 / cfm	38.5/22.7	54.0/31.8	87.5/51.5	170/100	240/141	400/236	470/277	640/377	755/444
Pumping Speed (60Hz)	m3h-1 / cfm	47.0/27.7	64.0/37.7	105/61.8	200/118	290/171	470/277	–	755/444	–
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	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	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	ISO100 / G3	ISO100 / G3	ISO100	ISO100
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	ISO100 / G3	ISO100 / G3	ISO100	ISO100
Max permitted outlet pressure	bar (abs)	1.15 abs	1.15 abs	1.15 abs	1.15 abs	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	5.0/5.3	7.5/8.0	17/18	24/25
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	7.5/8.0	–	24/25	–
Dimensions (L,W,H) Approximate (tbc)	mm	540/284/303	586/320/314	721/400/319	1002/535/415	1130/555/450	1305/863/733	1305/863/733	1566/989/740	1566/989/740
Weight Approximate (tbc)	kg / lb	67/148	86/190	104/230	142/313	244/539	480/1059	550/1214	760/1678	760/1678
Motor protection rating		IP55	IP55	IP55	IP55	IP55	IP55	IP55	IP55	IP55
Motor power (50Hz)	kW / hp	1.1/1.5	1.5/2.0	3.0/4.0	4.5/6.0	5.5/7.5	nov.15	nov.15	18.05.2026	18.05.2026
Motor power (60Hz)	kW / hp	1.5/2.0	1.8/3.0	3.6/5.0	5.5/7.5	6.6/10.0	13.02.2018	–	21/30	–
Cooling		air	air	air	air	air
Cooling water flow (if applicable)	L / h	–	–	–	–	–
Noise level (50Hz) air/water	dB(A)	58	60	61	69	72	72	75	72	75
Noise level (60Hz) air/water	dB(A)	60	64	64	73	76	75	–	75	–
Oil refill capacity	litre	1	2	2	05.sept	8.5-11.5	20	20	20-23	20-23
Recommended oil		Edwards ULTRAGRADE Performance 70

nES Single Stage Rotary Vane

Primary Vacuum

Superior performance

High reliability

Low lifecycle cost

Compact and clean

A compact design with low maintenance

Optimised oil return system

Low lifecycle cost

Flexible and systemisation friendly

Swiss Official Distributor of

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