Edwards E2M28 Two Stage Rotary Vane Vacuum Pump – 19.5 CFM, 380-400V 3-Phase 50Hz / 230/460V 3-Phase 60Hz, IE3 Motor (A37333940)
Edwards E2M28 Two Stage Rotary Vane Vacuum Pump – 19.5 CFM, 380-400V 3-Phase 50Hz / 230/460V 3-Phase 60Hz, IE3 Motor (A37333940)
The Edwards E2M28 (part number A37333940) is a high-capacity two-stage oil-sealed rotary vane vacuum pump from the EM series, featuring a premium IE3 high-efficiency motor. This 3-phase model supports 380-400V 3-ph 50 Hz or 230/460V 3-ph 60 Hz (hard-wired in the electrical box), making it ideal for facilities with three-phase power and continuous or high-duty-cycle operation.
With a strong pumping speed of 19.5 CFM (33.0 m³/h) at 60 Hz and an excellent ultimate vacuum of 1 × 10⁻³ mbar (7.5 × 10⁻⁴ Torr) without gas ballast, the E2M28 delivers fast pump-down, superior vapor handling, quiet performance, and reliable long-term operation. The advanced lubrication system and rugged design ensure consistent results in demanding laboratory and light industrial applications.
Key Features and Benefits
- Two-stage rotary vane design for deep ultimate vacuum and excellent vapor tolerance
- High pumping speed of 19.5 CFM (33.0 m³/h) at 60 Hz
- Quiet operation at 57 dB(A)
- High-efficiency IE3 motor for better energy performance and reliability
- Versatile 3-phase power: 380-400V 50 Hz or 230/460V 60 Hz
- Adjustable gas ballast for improved handling of condensable vapors
- Advanced pressurized oil lubrication system for extended service life
- Thermal overload protection
- NW25 inlet flange for easy system integration
- Rugged freestanding design built for continuous duty
Technical Specifications
| Specification | Value |
|---|---|
| Pumping Speed (60 Hz, Pneurop) | 19.5 CFM / 33.0 m³/h |
| Displacement (60 Hz) | 22.3 CFM / 38.9 m³/h |
| Ultimate Vacuum (without gas ballast) | 1 × 10⁻³ mbar / 7.5 × 10⁻⁴ Torr |
| Ultimate Vacuum (with gas ballast) | ~1.5 × 10⁻² mbar |
| Motor Power (60 Hz) | 0.90 kW |
| Voltage / Frequency | 380-400V 3-ph 50 Hz or 230/460V 3-ph 60 Hz |
| Motor Type | IE3 High Efficiency |
| Power Connection | Hard-wired (in electrical box) |
| Noise Level | 57 dB(A) |
| Inlet Flange | NW25 (KF25) |
| Outlet Connection | 15 mm external diameter nozzle (removable from 3/4" BSP) |
| Max Water Vapor Pumping Rate | 0.7 kg/h |
| Oil Capacity (max / min) | 1.5 L / 1.2 L |
| Recommended Oil | Ultragrade 19 (supplied) |
| Weight | 44 kg / 97 lbs |
| Operating Temperature Range | 13 – 40°C |
Why Choose the Edwards E2M28 3-Phase IE3? This IE3 high-efficiency 3-phase version offers higher pumping capacity than the E2M18 while providing better energy efficiency and suitability for continuous-duty applications. It maintains the EM series’ reputation for quiet, dependable performance and easy maintenance.
Applications
- Laboratory vacuum systems
- Mass spectrometry and analytical instruments
- Vacuum drying and degassing
- Vacuum ovens and freeze dryers
- Refrigeration and air conditioning service
- Light industrial processes and backing pumps
- General roughing applications requiring higher throughput
What's Included
- Edwards E2M28 Rotary Vane Vacuum Pump (A37333940)
- Ultragrade 19 vacuum pump oil (initial charge)
- NW25 centering ring and O-ring
- Spare seals for oil drain and filler plugs
Note: Power cord / wiring is not included (hard-wired in the electrical box). For corrosive or aggressive vapor applications, consider the PFPE-prepared E2M28FX variants (such as A37325984 or A37341940).
The Edwards E2M28 two-stage rotary vane vacuum pump (3-phase IE3) delivers higher capacity, excellent vapor handling, quiet operation, and long-term reliability for laboratory and light industrial vacuum needs.
Edwards E2M28 Two Stage Rotary Vane Vacuum Pump – 19.5 CFM, 380-400V 3-Phase 50Hz / 230/460V 3-Phase 60Hz, IE3 Motor (A37333940)
The Edwards E2M28 (part number A37333940) is a high-capacity two-stage oil-sealed rotary vane vacuum pump from the EM series, featuring a premium IE3 high-efficiency motor. This 3-phase model supports 380-400V 3-ph 50 Hz or 230/460V 3-ph 60 Hz (hard-wired in the electrical box), making it ideal for facilities with three-phase power and continuous or high-duty-cycle operation.
With a strong pumping speed of 19.5 CFM (33.0 m³/h) at 60 Hz and an excellent ultimate vacuum of 1 × 10⁻³ mbar (7.5 × 10⁻⁴ Torr) without gas ballast, the E2M28 delivers fast pump-down, superior vapor handling, quiet performance, and reliable long-term operation. The advanced lubrication system and rugged design ensure consistent results in demanding laboratory and light industrial applications.
Key Features and Benefits
- Two-stage rotary vane design for deep ultimate vacuum and excellent vapor tolerance
- High pumping speed of 19.5 CFM (33.0 m³/h) at 60 Hz
- Quiet operation at 57 dB(A)
- High-efficiency IE3 motor for better energy performance and reliability
- Versatile 3-phase power: 380-400V 50 Hz or 230/460V 60 Hz
- Adjustable gas ballast for improved handling of condensable vapors
- Advanced pressurized oil lubrication system for extended service life
- Thermal overload protection
- NW25 inlet flange for easy system integration
- Rugged freestanding design built for continuous duty
Technical Specifications
| Specification | Value |
|---|---|
| Pumping Speed (60 Hz, Pneurop) | 19.5 CFM / 33.0 m³/h |
| Displacement (60 Hz) | 22.3 CFM / 38.9 m³/h |
| Ultimate Vacuum (without gas ballast) | 1 × 10⁻³ mbar / 7.5 × 10⁻⁴ Torr |
| Ultimate Vacuum (with gas ballast) | ~1.5 × 10⁻² mbar |
| Motor Power (60 Hz) | 0.90 kW |
| Voltage / Frequency | 380-400V 3-ph 50 Hz or 230/460V 3-ph 60 Hz |
| Motor Type | IE3 High Efficiency |
| Power Connection | Hard-wired (in electrical box) |
| Noise Level | 57 dB(A) |
| Inlet Flange | NW25 (KF25) |
| Outlet Connection | 15 mm external diameter nozzle (removable from 3/4" BSP) |
| Max Water Vapor Pumping Rate | 0.7 kg/h |
| Oil Capacity (max / min) | 1.5 L / 1.2 L |
| Recommended Oil | Ultragrade 19 (supplied) |
| Weight | 44 kg / 97 lbs |
| Operating Temperature Range | 13 – 40°C |
Why Choose the Edwards E2M28 3-Phase IE3? This IE3 high-efficiency 3-phase version offers higher pumping capacity than the E2M18 while providing better energy efficiency and suitability for continuous-duty applications. It maintains the EM series’ reputation for quiet, dependable performance and easy maintenance.
Applications
- Laboratory vacuum systems
- Mass spectrometry and analytical instruments
- Vacuum drying and degassing
- Vacuum ovens and freeze dryers
- Refrigeration and air conditioning service
- Light industrial processes and backing pumps
- General roughing applications requiring higher throughput
What's Included
- Edwards E2M28 Rotary Vane Vacuum Pump (A37333940)
- Ultragrade 19 vacuum pump oil (initial charge)
- NW25 centering ring and O-ring
- Spare seals for oil drain and filler plugs
Note: Power cord / wiring is not included (hard-wired in the electrical box). For corrosive or aggressive vapor applications, consider the PFPE-prepared E2M28FX variants (such as A37325984 or A37341940).
The Edwards E2M28 two-stage rotary vane vacuum pump (3-phase IE3) delivers higher capacity, excellent vapor handling, quiet operation, and long-term reliability for laboratory and light industrial vacuum needs.