Edwards E2M28 Rotary Vane Vacuum Pump

The Edwards E2M28 is a high-performance dual-stage, oil-sealed rotary vane vacuum pump designed for demanding laboratory, research, and light-industrial applications. Known for its reliability, strong vapor-handling capabilities, and low maintenance requirements, the E2M28 delivers steady, efficient pumping for a wide range of vacuum processes.

Key Features & Performance

• Pumping speed: Approximately 22.3 ft³/min (≈ 38.9 m³/h at 60 Hz)
• Ultimate vacuum: Down to ~1 × 10⁻³ mbar (≈ 7.5 × 10⁻⁴ Torr) without gas ballast
• Ultimate vacuum with gas ballast: ~1.5 × 10⁻² mbar
• Noise level: Around 57 dB(A) at 1 meter
• Motor power: 0.75 kW at 50 Hz / 0.90 kW at 60 Hz
• Weight: Approximately 44 kg (≈ 97 lb)
• Oil capacity: 1.2–1.5 liters
• Inlet connection: NW25
• Outlet: 15 mm OD nozzle (removable, with ¾″ BSP tapped port)

Design Benefits

• Dual-stage, direct-drive rotary vane system ensures deep vacuum levels and stable performance.
• Strong vapor-handling capability due to adjustable gas ballast — ideal for moisture and solvent-heavy processes.
• Enclosed, air-cooled motor with integrated thermal overload protection for safe and continuous operation.
• Large oil sight-glass for easy level and condition monitoring; convenient bottom drain for oil changes.
• Compact, standalone design that integrates easily into new or existing setups.

Common Applications

• Vacuum ovens, freeze dryers, distillation, evaporation systems
• Degassing processes for resins, epoxies, and solvent mixtures
• Backing pump for turbomolecular pumps
• Thin-film coating systems
• Glove boxes and controlled atmosphere chambers
• General laboratory and industrial vacuum needs