Edwards E2M28 Vacuum Pump Dual Stage (Refurbished)

The Edwards E2M28 is a high-performance two-stage oil-sealed rotary vane vacuum pump engineered for applications demanding stable vacuum performance, excellent reliability, and continuous operation. Combining high pumping speed with low ultimate pressure and rugged mechanical construction, the E2M28 is ideally suited for analytical laboratories, research facilities, and demanding industrial vacuum processes.

Key Features

• Two-stage compression for deeper vacuum performance
• Pumping speed up to 33 m³/h
• Ultimate pressure down to 0.1 Pa
• Ideal backing pump for turbomolecular pumps
• Gas ballast valve for efficient water vapor handling
• Advanced lubrication system for extended service life
• Forced-air cooling for continuous operation
• Low operating noise of only 57 dB(A)
• Oil sight glass for easy condition monitoring
• Wide-voltage motor for global operation
• High-grade cast iron rotor and stator
• Easy maintenance with long service intervals
• Designed for continuous 24/7 operation

Technical Specifications

Performance

• Pumping speed (50 Hz): 27.5 m³/h
• Pumping speed (60 Hz): 33.0 m³/h

Vacuum Performance

• Ultimate pressure: 0.1 Pa
• Ultimate pressure with gas ballast: 1.5 Pa

Motor

• Rated power (50 Hz): 750 W
• Rated power (60 Hz): 900 W

Connections

• Inlet: DN25 ISO-KF (NW25)
• Outlet: 15 mm hose nozzle

Construction

• High-grade cast iron rotor
• High-grade cast iron stator
• Oil capacity: 1.2–1.5 L

Dimensions

• 626 × 180 × 262 mm

Weight

• 44 kg

Typical Applications

• Mass spectrometry
• Turbomolecular vacuum systems
• Electron microscopy
• Vacuum coating
• Freeze drying
• Vacuum furnaces
• Chemical processing
• Pharmaceutical manufacturing
• Food processing
• Research laboratories