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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 E1M18 and E2M18 pumps are direct drive, sliding vane pumps. The pump is oil sealed and designed for reliable, long-term operation. The pump is a freestanding unit with the drive provided through a flexible coupling by either a single-phase or three-phase (four-pole) motor.

Supplied with: Ultragrade 19 oil, NW25 exhaust flanges rather than the Nozzle that is supplied as standard with hydrocarbon pumps.

Fomblin® must be purchased separately for PFPE pumps


Features and Benefits

  • The pump is configured for use with PFPE fluids.
  • The pump is designed for reliable, long-term operation.
  • Thermal overload device prevents overheating (single phase only).
  • The drive is provided through a flexible coupling by a single-phase or three-phase (four pole) motor.
  • The motors are totally enclosed and are cooled by the motor-cooling fan.
  • Pressure die cast oil box with integral oil seals prevents oil leaks.
  • Gas ballast valve for large water vapour handling capacity.
  • Externally approved to EN61010, CSA, C22.2 and UL61010.
  • Large O-ring sealed oil sight glass allows oil condition and level to be easily inspected.


  • Pumping gas mixtures that contain more than 25% oxygen
  • Where gas species being pumped causes the rapid breakdown of conventional hydrocarbon oils.
Dane techniczne

Displacement (50Hz) 20.5 m3h-1 /
  12.1 ft3min-1
Displacement (60Hz) 25.0 m3h-1 /
  14.7 ft3min-1
Speed (Pneurop 6602) 50 Hz 17.0 m3h-1 /
  10 ft3min-1
Speed (Pneurop 6602) 60Hz 20.4 m3h-1 /
  12.1 ft3min-1
Ultimate vacuum (total pressure)  
  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
  with Fomblin® 3 x 10-1 mbar /
  2.56 x 10-2 Torr
Inlet connection NW25
Outlet connection Nozzle 15 mm external Ø removable from 3/4 in BSP tapped hole
Max permitted pressure at outlet 0.5 bar gauge /
  7 psig
Max inlet pressure 50 mbar /
for water vapour 38 Torr
Max water vapour pumping rate 0.65 kg h-1
Operating temp range 13-40°C
Nominal Rotation speed 50/60Hz 1440/1720 rpm
Power connector 1-ph* IEC EN60320 C19
Motor power 50 Hz 0.55 kW
Motor power 60 Hz 0.75 kW
Weight 37 kg / 82 lbs
Noise @ 50Hz 57 dB(A)
Oil capacity - max 1.4 litre
Oil capacity - min 0.9 litre
Recommended oil (supplied) Ultragrade 19

*  Pumps listed with IEC connector only