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The Edwards E2M28 oil-sealed rotary vacuum pump is renowned for its high ultimate vacuum, rapid pumping speed, quiet operation, and ability to handle vapour, making it 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 air-cooled motor. It functions at its best in very good condition, making it ideal for applications such as analytical instruments, automotive, coating, cryogenics, distillation, extraction, and various other laboratory processes. This model was manufactured in the United Kingdom and is currently in used condition. The Edwards E2M28's unique features include an enclosed motor cooled by a fan, thermal overload protection, oil pressure system lubrication, gas ballast valve, and automatic reset. The pump has an ultimate vacuum (total pressure) without gas ballast of 1 x 10-3 mbar / 7.5 x 10-4 Torr, making it highly efficient for applications requiring a high vacuum level. The machine weighs 44 kg, has a noise level of 57 dB(A) @ 50 Hz and recommended oil (supplied) as Ultragrade 19. This pump is known for reliable, long-term operation and is designed for 50/60Hz frequency.
Key Features
- High ultimate vacuum and rapid pumping speed
- Single-phase or three-phase flexible coupling motor drive
- Oil pressure system lubrication and thermal overload protection
Specifications
- Displacement (swept volume) at 50 Hz: 32.2 m3h-1 / 19 ft3min-1
- Ultimate vacuum without gas ballast: 1 x 10-3 mbar / 7.5 x 10-4 Torr
- Ultimate vacuum with gas ballast: 1.5 x 10-2 mbar / 1.1 x 10-2 Torr
- Inlet connection: NW25 flange
- Max inlet pressure for water vapour: 30 mbar / 23 Torr
- Operating temperature range: 13 - 40°C
- Motor power at 50 Hz: 0.75 kW
- Motor power at 60 Hz: 0.90 kW
- Weight: 44 kg / 97 lbs
- Noise level: 57 dB(A) @ 50 Hz
- Oil capacity - max: 1.5 litre
- Oil capacity - min: 1.2 litre
Weight
Metric: 44 kg
Imperial: 97 lb
Dimensions
Metric: 60 cm x 19 cm x 50 cm
Imperial: 23.6 in x 7.5 in x 19.7 in
