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Edwards nES Single Stage EX Series Rotary Vane Pump

Edwards nES Single Stage EX Series Rotary Vane Pump

Models: nES40ex – nES630ex | ATEX Category 2 | Manufacturer: Edwards

The Edwards nES Single Stage EX Series offers oil-sealed rotary vane vacuum pumping for use in explosive environments. Available through ACFM, an official Edwards vacuum pump supplier, the range includes nES40ex through nES630ex models, with ATEX Category 2 configurations, built-in protection features, gas ballast, and air-cooled operation for specialized industrial applications.

Product Specifications
Models
nES40ex, nES65ex, nES100ex, nES200ex, nES300ex, nES630ex
Max Displacement @ 50 Hz
44.0 to 700 m³/h
Pumping Speed @ 50 Hz
38.5 to 640 m³/h
Ultimate Vacuum (No Ballast)
0.5 mbar (40–100ex) / 0.15 mbar (200–630ex)
Max Outlet Pressure
1.15 bar (abs)
Cooling
Air Cooled
ATEX Compliance
Category 2, Directive 2014/34/EU
Pump Type
Oil-Sealed Rotary Vane

nES EX Design and Features

ATEX Category 2 configuration for explosive environments
Compliant with ATEX Directive 2014/34/EU
ATEX-rated motor and pump protection features
Built-in temperature sensor
Air-cooled pump and motor arrangement
Gas ballast valve for the pump
ATEX-rated exhaust filtration provisions
FPM seals supplied with the pump
ATEX-rated motor and coupling
Approved oil supplied with the pump
Internal mechanism designed to minimize hot spots
Optimized oil return system
Direct-drive technology
ISO and ANSI-compatible inlet connections
ISO and ANSI-compatible outlet connections
Bare-shaft versions available for selected models (non-ATEX compliant)

nES Single Stage EX Applications

Chemical Processing
Pharmaceutical
Ethylene Oxide Sterilising
Air Conditioning Gas Recovery
Power Plant Alternator Oil Degassing
Automotive
Gas Vapour Recovery
Gas Bottle Filling

nES EX ATEX Configurations

The nES Single Stage EX range is offered as ATEX Category 2 equipment. The nES40ex, nES65ex, nES100ex, nES200ex, and nES300ex models have specified ATEX motor configurations for 50 Hz and, where stated, 60 Hz operation. The nES630ex is specified for 400 and 690 V ±10% at 50 Hz only.

Bare-shaft versions are listed for the nES40ex, nES65ex, nES100ex, nES200ex, and nES300ex. These bare-shaft pumps are explicitly identified as non-ATEX compliant and are supplied ready for local motor fitting.

Put the Right ATEX Pump to Work

Choose the appropriate nES EX configuration for your application and operating requirements. ACFM can help with model information, specifications, and availability.