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Edwards E1M18 Vacuum Pump

From€3,920.57excl. VAT

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50 Hz
20.5 m3h-1 / 12.1 ft3min-1
60 Hz
25.0 m3h-1 / 14.7 ft3min-1
without gas purge
3 x 10-2 mbar / 2.2 x 10-2 Torr
with gas purge
6.5 x 10-1 mbar / 4.8 x 10-1 Torr
Inlet connection
NW25
All 20 specifications
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Specifications 20

Brands
Edwards Vacuum
New/Used
New
50 Hz
20.5 m3h-1 / 12.1 ft3min-1
60 Hz
25.0 m3h-1 / 14.7 ft3min-1
without gas purge
3 x 10-2 mbar / 2.2 x 10-2 Torr
with gas purge
6.5 x 10-1 mbar / 4.8 x 10-1 Torr
Inlet connection
NW25
Outlet connection
Nozzle 15 mm external diameter removable from 3/4" BSP tapped hole
Maximum permitted pressure at outlet
0.5 bar gauge / 7 psig
Maximum inlet pressure for water vapour
50 mbar / 38 Torr
Maximum water vapour pumping rate
0.65 kg h-1
Motor power 50/60 Hz
0.55 kW / 0.75kW
Nominal rotational speed 50/60Hz
1,440/1,720 rpm
Power connector
IEC EN60320 C19
Operating temperature range
13 - 40°C
Weight
37 kg / 82 lbs
Noise
57 dB(A) @ 50 Hz
Oil capacity - maximum
1.4 litre
Oil capacity - minimum
0.9 litre
Recommended oil
Ultragrade 19

Product description

High-performance vacuum pump with rapid speed and quiet operation, ideal for labs and industries.

Edwards E1M18 Vacuum Pump

Ultimate Vacuum < 3x10-2mbar Inlet Connection NW25 Displacement 25.0 m3h-1 / 14.7 ft3min-1

Features

  • High ultimate vacuum and rapid pumping speed ensure efficient operation across a wide range of laboratory and industrial applications
  • Quiet operation provides a comfortable working environment, reducing noise in sensitive areas
  • Features a pressurized oil system that lubricates pump shaft bearings and rotor sealing faces for reliable performance
  • Maintenance is simplified with an oil sight-glass for easy monitoring of oil levels and conditions at a glance
  • Facilitates easy oil changes with an oil drain plug that allows either gravity or pressure oil drainage for convenience
  • Compact, freestanding design allows flexible use without the need for additional support structures
  • Ideal for use with analytical instruments, leak detectors, helium research, and for backing turbomolecular pumps, showcasing its versatility

Edwards E1M18 Vacuum Pump The EM range of oil sealed rotary pumps – renowned for their high ultimate vacuum, rapid pumping speed, quiet operation and ability to handle vapour – have become the industry standard for laboratory and light industrial applications. The pump is a freestanding unit with the drive provided through a flexible coupling by either a single phase or three phase (four pole) air cooled motor.

Each EM pump is supplied with 2 x 1 litre of Ultragrade 19 oil, O ring and centering ring, two Allen keys and spares seal for oil drain and filter plugs. For PFPE prepared FX pumps Fomblin® to be ordered separately.

This is a single stage oil sealed rotary vane pump which has a pressurised oil system that lubricates the pump shaft bearing surfaces and rotor sealing faces. The pump has an oil distribution valve which prevents discharge of oil to the pump interior after the pump stops. The pumping chambers are air-tight, so this arrangement also prevents suckback unless the gas ballast valve is open.You can inspect the level and condition of oil in the oil box reservoir through the oil sight-glass. An oil filler-plug is fitted to the top of the oil box. The pump has an oil drain-plug to allow either gravity oil drain or pressure oil drain.Click Here to View Product Video

INCLUDED: The Edwards E1M18 Vacuum Pump includes:

  • 2 Liters of Ultragrade 19 Oil
  • O ring and centering ring
  • Two Allen keys and spares seal for oil drain and filter plugs
  • Operator's Manual
  • 1 Year Manufacturer's Warranty

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 6 November 2026