Agilent DS 202 Rough Vacuum pump, G3850-80240 (Refurbished)

The Agilent G3850-80240 is a DS 202 dual-stage oil-sealed rotary vane pump used to generate foreline vacuum in selected GC/MS instruments. It removes gases from the vacuum manifold and supports stable operation of the high-vacuum turbomolecular pump. Its robust design, DN 25 KF connections, and pumping speed of 8.3 m³/h at 50 Hz make it suitable as a genuine replacement component for compatible Agilent instrument service and refurbishment.

Key Features

• Dual-stage oil-sealed rotary vane design
• Designed as a foreline pump for selected GC/MS systems
• Pumping speed of 8.3 m³/h at 50 Hz
• Base pressure below 2 × 10⁻³ mbar
• Single-phase 240 V electrical configuration
• DN 25 KF inlet and exhaust flanges
• Integrated gas ballast
• Suitable for instrument service, repair, and refurbishment

Technical Specifications

• Model: DS 202
• Part Number: G3850-80240
• Product Type: GC/MS foreline pump
• Pump Design: Dual-stage oil-sealed rotary vane pump
• Supply Voltage: 240 V
• Motor Configuration: Single phase
• Pumping Speed at 50 Hz: 8.3 m³/h
• Pumping Speed at 60 Hz: 5.8 CFM
• Free Air Displacement at 50 Hz: 160 L/min
• Free Air Displacement at 60 Hz: 192 L/min
• Ultimate Total Pressure: < 2 × 10⁻³ mbar
• Ultimate Total Pressure with Gas Ballast: 2 × 10⁻² mbar
• Ultimate Partial Pressure: 1 × 10⁻⁴ mbar
• Water Vapor Tolerance: 15 mbar
• Water Vapor Capacity: 100 g/h
• Oil Capacity: 0.25 to 0.60 L
• Motor Rating at 50 Hz: approximately 0.45 kW
• Motor Rating at 60 Hz: approximately 0.55 kW
• Nominal Speed at 50 Hz: 1,500 rpm
• Nominal Speed at 60 Hz: 1,800 rpm
• Inlet Flange: DN 25 KF
• Exhaust Flange: DN 25 KF
• Weight: approximately 25 kg

Applications and Compatibility

• Foreline vacuum stage in GC/MS systems
• Backing of a turbomolecular pump
• Evacuation of the mass spectrometer vacuum manifold
• Routine GC/MS analysis
• Vacuum system servicing and refurbishment
• Replacement of a worn or defective DS 202 pump