Edwards · nES Single Stage Rotary Vane Pumps

nES300S

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Oil-Lubricated Rotary VaneOEM data

Image: Edwards

Pumping speed: 330 m³/h
Ultimate pressure: 0.08 mbar
Weight: 244 kg
Motor power: 7.2 kW

Headline ratings converted to common units for comparison; the table below shows each figure exactly as published.

Technical data

Source: Edwards product page · retrieved 2026-10-02

As published	50 Hz	60 Hz	50 Hz; (50 Hz)	60 Hz; (60Hz)	without gas ballast	with gas ballast	Value	(LxWxH) approximate	approximate	50 Hz; (50Hz)	50 Hz; (50Hz) air/water	60 Hz; (60Hz) air/water
Maximum displacement (50Hz)	330 m3h-1 oem source Source · 2026-10-02
Maximum displacement (60Hz)		385 m3h-1 oem source Source · 2026-10-02
Pumping speed (50 Hz) Pumping speed			284 m3h-1 oem source Source · 2026-10-02
Pumping speed (60Hz) Pumping speed				330 m3h-1 oem source Source · 2026-10-02
Ultimate vacuum without gas ballast Ultimate pressure					0.08 mbar oem source Source · 2026-10-02
Ultimate vacuum with gas ballast Ultimate pressure						0.7 mbar oem source Source · 2026-10-02
Inlet connection							63 ISO-F/G2 ISO-F/G2 ISO / G oem source Source · 2026-10-02
Outlet connection							63 ISO-F/G2 ISO-F/G2 ISO / G oem source Source · 2026-10-02
Max permitted outlet pressure							1.15 bar oem source Source · 2026-10-02
Max water vapour pumping rate (50Hz)	1.3/1.4 /1.4 kgh-1 / lbh-1 oem source Source · 2026-10-02
Max water vapour pumping rate (60Hz)		1.8/1.9 /1.9 kgh-1 / lbh-1 oem source Source · 2026-10-02
Dimensions (LxWxH) approximate Dimensions								1117x565x450 mm oem source Source · 2026-10-02
Weight approximate Weight									244 kg oem source Source · 2026-10-02
Motor protection rating							IP55 oem source Source · 2026-10-02
Motor rated power (50Hz) Motor power										6 kW oem source Source · 2026-10-02
Motor rated power (60Hz) Motor power				7.2 kW oem source Source · 2026-10-02
Cooling							air oem source Source · 2026-10-02
Noise level (50Hz) air/water Noise level											72 dB(A) oem source Source · 2026-10-02
Noise level (60Hz) air/water Noise level												76 dB(A) oem source Source · 2026-10-02
Oil refill capacity							8.5-11.5 litre^R Needs review · excluded from comparison Source · 2026-10-02

Original extracted values are shown with their source and review status. Multiple values under the same condition remain separate for review.

^R a min–max range as published, not a single rating

Same family: nES100, nES220, nES300, nES40, nES630, nES65, nES750

Explore the parts

nES300S, pulled apart

This model’s parts, by where they sit

Our drawing of the machine type, with the nES300S's own parts from Edwards's lists. Side view along the shaft. Oil-free (dry) pumps have no exhaust box oil, sight glass or oil filter; their exhaust filter is a dust filter.