Vacuum pump DEWARDS Medium and Large EM Oil Sealed Rotary Vane Pumps
ATEX versions for explosion-proof compliance
E2M Ex Series to pump or operate in environments where a potentially explosive atmosphere can be present. Edwards can offer a wide range of products for use in and with explosive atmospheres. They are certified for ATEX and other applicable global standards.
Get the right series for your need
HC Series with hydrocarbon oil for most of the applications, FX Series for pumping rich-oxygen gas mixtures (PFPE prepared) and AZ Series for applications with chemically active compounds (Azide compatible).
Applications
- Vacuum metallurgy processes
- Thin film coating technologies
- Pharmaceutical freeze drying
- Refrigeration and air conditioning system evacuation, drying, and backfilling
- Transformer and cable drying and impregnation, insulating oil treatment plant
- Lamp manufacture
- Cryogenic vessel evacuation
- Vacuum drying and distillation in chemical industries
- Semiconductor device manufacture
- Backing pump for high vacuum applications
Features and Benefits
- Reliability
– Reliable and stable process – effective lubrication even under high gas loads. - Robust
– No contamination of process – oil and air suck?back protection. - Performance
– Long and trouble free life – industrial roller bearings on drive shaft. - Reassurance
– Peace of mind – tried, tested and industry standard for years.
– Reliable and stable – high vacuum performance.
SPECIFACATIONS
| Model. | E2M 40 | E2M 80 | E2M 175 | E2M 275 | |
| Max displacement (50Hz) | m3h?1 | 42.5 | 80 | 175 | 292 |
| Max displacement (60Hz) | m3h?1 | 50.5 | 96 | 214 | 350 |
| Pumping speed (50 Hz) | m3h?1 | 37 | 74 | 160 | 170/100 |
| Pumping speed (60Hz) | m3h?1 | 44 | 90 | 196 | 306 |
| Ultimate total pressure without gas ballast | mbar | 3.00E-03 | |||
| Ultimate vacuum with gas ballast | mbar | 5.00E-03 | |||
| Inlet connection | ISO-F / NW | 40 | 40 | 63 | 63 |
| Outlet connection | NW | 25 | 25 | 40 | 40 |
| Max permitted outlet pressure | bar (g) | 0.5 | |||
| Max water vapour tolerance | mbar | 7 | 5 | 4 (20*) | 2 (12*) |
| Max water vapour capacity | kgh?1 | 0.2 | 0.3 | 2.4 | 2.5 |
| Maximum gas ballast flow | m3h?1 | 1.7 | 1.4 | 3 | 3 |
| Dimensions (LxWxH) | mm | 780x240x395 | 889x266x429 | 1055x388x533 | 1165x388x533 |
| Weight approximate | Kg | 75 | 104 | 198 | 216 |
| Motor protection rating | IP | 55 | |||
| Motor rated power (50Hz) | kW | 1.1 | 2.2 | 5.5 | 7.5 |
| Motor rated power (60Hz) | kW | 1.5 | 3 | 6.5 | 8.5 |
| Noise level (50Hz) | dB(A) | 65 | 75 | ||
| Oil refill capacity (Max) | litre | 2.2/4 | 4/6.3 | 16/25 | 18/28 |
| Recommended oil | Ultragrade 70 (E2M HC, AZ & EX) / PFPE lubricant (E2M FX) | ||||
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