Pfeiffer Vacuum DUO 3 (G7077-80056) – Two-Stage Oil-Sealed Rotary Vane Pump (Refurbished)

The DUO 3 model (G7077-80056) is a compact and quiet two-stage rotary vane pump designed for laboratory and analytical applications requiring reliable vacuum in the low to medium pressure range. With its simple design, low power consumption, and robust construction, it is suitable for continuous operation in both laboratory and industrial environments.

Key Features:

• Two-stage design for achieving low ultimate pressure
• Compact size, low weight, and easy system integration
• Quiet operation with minimal vibration
• Integrated anti-suckback valve to prevent oil backflow
• Transparent oil sight glass for convenient monitoring
• Compatible with frequency converters

Technical Specifications:

• Model: DUO 3
• Customer No.: G7077-80056
• Part No.: PK D41 064 H
• Serial No.: 22090716
• Voltage: 230–240 V ±10 %
• Frequency: 50/60 Hz
• Current consumption: 1.4 A (50 Hz) / 1.8 A (60 Hz)
• Maximum pumping speed: 2.9 m³/h
• Maximum rotational speed: 3,600 rpm
• Oil type: AVF 45 (recommended fill: 0.4 L)
• Weight: 10.5 kg
• Connections: DN 16 KF (inlet/outlet)
• Ultimate pressure without gas ballast: ≤ 3 × 10⁻³ mbar
• Ultimate pressure with gas ballast: 5 × 10⁻² mbar

Typical Applications:

• GC/MS and other vacuum-based analytical systems
• Laboratory vacuum setups
• Vacuum drying and degassing
• Evacuation of small chambers and vacuum material handling