- Displacement (swept volume) 50 Hz 32.2 m3h-1 / 19 ft3min-1
- Speed (Pneurop 6602) 50 Hz 27.5 m3h-1 / 16.2 ft3min-1
- Ultimate vacuum (total pressure) without gas ballast 1 x 10-3 mbar / 7.5 x 10-4 Torr
- Inlet connection NW25 flange
The E2M28 Rotary Vane Pump is a two-stage, direct drive, sliding vane pump. The pump is oil-sealed and designed for reliable, long-term operation in both laboratory and industrial environments. The pump is a free-standing unit. 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 which directs air along the motor fins.
The single-phase motors have a thermal overload device. When the motor is too hot, the thermal overload device switches off the pump. The thermal overload device has an automatic reset; when the motor cools down, the device resets and the motor will restart. The single phase motors have an on/off switch.
An oil pressure system 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 (suckback) after the pump stops. The pumping chambers are air-tight, so this arrangement prevents air 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 gravity oil drain.
The pump has an inlet-port, outlet nozzle and gas-ballast control. The pump is mounted on an aluminum alloy baseplate on rubber pads.

A&J Vacuum also repair / rebuild and service all Edwards E2M1.5, E2M2, E2M5, E2M8, E2M12, E2M28 Series Vacuum Pumps along with all other Edwards Turbo Pumps, Edwards Dry Pumps, Edwards Scroll Pumps and all other Edwards Vacuum Rotary Vane pumps. Please contact us for information on service program or click here http://www.ajvs.com/service.php to go to our Service page. We also offer Emergency service upon request. For more information Please contact A&J Vacuum Services at 973-249-0854.
| Displacement (swept volume) | |
| 50 Hz | 32.2 m3h-1 / 19 ft3min-1 |
| 60 Hz | 38.9 m3h-1 / 22.3 ft3min-1 |
| Speed (Pneurop 6602) | |
| 50 Hz | 27.5 m3h-1 / 16.2 ft3min-1 |
| 60Hz | 33.0 m3h-1 / 19.5 ft3min-1 |
| Ultimate vacuum (total pressure) | |
| without gas ballast | 1 x 10-3 mbar / 7.5 x 10-4 Torr |
| with gas ballast | 1.5 x 10-2 mbar / 1.1 x 10-2 Torr |
| with Fomblin® | 1 x 10-2 mbar / 7.5 x 10-3 Torr |
| Inlet connection | NW25 flange |
| Outlet connection** | Nozzle 15 mm external Ø removable from 3/4 in BSP tapped hole |
| Max allowed pressure at outlet | 0.5 bar gauge / 7 psig |
| Max inlet pressure for water vapour | 30 mbar / 23 Torr |
| Max water vapour pumping rate | 0.7 kg h-1 |
| Operating temperature range | 13 – 40 °C |
| Nominal rotation speed | 1440 / 1720 rpm |
| Motor power 50 Hz | 0.75 kW |
| Motor power 60 Hz | 0.90 kW |
| Power Connector 1-ph* | IEC EN60320 C19 |
| Weight | 44 kg / 97 lbs |
| Noise | 57 dB(A) @ 50 Hz |
| Oil capacity - max | 1.5 litre |
| Oil capacity - min | 1.2 litre |
| Recommended oil (supplied) | Ultragrade 19 |
A&J Vacuum also repair / rebuild and service all Edwards E2M1.5, E2M2, E2M5, E2M8, E2M12, E2M28 Series Vacuum Pumps along with all other Edwards Turbo Pumps, Edwards Dry Pumps, Edwards Scroll Pumps and all other Edwards Vacuum Rotary Vane pumps. Please contact us for information on service program or click here http://www.ajvs.com/service.php to go to our Service page. We also offer Emergency service upon request. For more information Please contact A&J Vacuum Services at 973-249-0854.
We can have a repair estimate ready for your equipment within the hour of submission.
Start your equipment repair process by creating a Service RMA.
A&J Vacuum Services provides repairs on all types of High Vacuum equipment. We perform Turbomolecular Pump repair, Turbo Pump Repair, Dry Pump repair, Vacuum Pump repair and Mass Spectrometer repair. Our highly trained technicians will deliver the highest quality service and satisfaction.
We operate at our own full service repair facility which allows us to quickly and economically perform all repairs in a timely manner. Our advandced machinery enables us to handle all facets of the service and repair process. AJVS utilizes industry standard vibration analysis equipment and advanced testing equipment to troubleshoot and minimize all equipment failures. Our in-house machine shop is capable of machining various components, prototypes and housing conversions as needed.