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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 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.


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Technical Data

Displacement (50Hz) 20.5 m3h-1 /

12.1 ft3min-1
Displacement (60Hz) 25.0 m3h-1 /

14.7 ft3min-1
Speed (Pneurop 6602)
50Hz 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


Used. Item removed from a working environment and is functional.


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      30 Day warranty. We pledge to offer the best service and warranty to all of our customers!  We are extending a 30 Day warranty on this item. This is our way of saying thank you for allowing us to serve you.


      This is a genuine product from this manufacturer.


      The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. the item is subject to FDA regulation, we will verify your status as an authorized purchaser of this item before shipping of the item."

      Regardless of the origin of the equipment, documentation provided or identification appearing upon the equipment, the equipment described and offered here is in no way certified for, recommended for, or offered for any specific use. The purchaser agrees that the seller shall not be held responsible or liable for any injuries or damages, whether incidental or consequential, associated in any way with the equipment. The purchaser, by bidding on this equipment, indicates their acknowledgment of, and agreement to the terms of this disclaimer. it is the purchaser's responsibility to have the item inspected and certified by a qualified professional before use!