Laboport N840G Diaphragm Vacuum Pump 34L/min Adjustable Speed Control

KNF Laboport N840G Diaphragm Vacuum Pump – 34 L/min, Adjustable Speed

Compact, Chemically-Resistant Vacuum Pump for Aggressive Laboratory Applications

The KNF Laboport N840G is a high-performance diaphragm vacuum pump designed for safe, oil-free transfer of aggressive and corrosive gases and vapors. With a maximum flow rate of 34 L/min and manual speed control, it offers precise adjustment for a wide range of laboratory applications including chemical processing, environmental analysis, and sample preparation.

Built with PTFE/TFM pump heads, PTFE-coated diaphragms, and FFPM valves, the N840G ensures excellent chemical resistance and minimal contamination risk. The integrated gas ballast enhances vapor handling, while the ATEX compliance (Ex II 2/-G IIB+H2 T3 internal atmosphere only) supports safe operation in hazardous environments.

Its compact footprint, quiet operation, and 100% oil-free design make it ideal for cleanroom and bench-top use.

Key Features:

• Flow Rate: 34 L/min
• Ultimate Vacuum: 6 mbar (absolute)
• Speed Control: Manual, adjustable
• Construction Materials:
  • PTFE/TFM pump heads
  • PTFE-coated diaphragms
  • FFPM valves
• Gas Handling: Integrated gas ballast for vapor compatibility
• Chemical Resistance: Full PTFE/FFPM flowpath
• Oil-Free: 100% oil-free transfer
• Compliance: ATEX (Ex II 2/-G IIB+H2 T3 internal atmosphere only)
• Design: Compact, quiet, and maintenance-free
• Applications:
  • Handling of aggressive/corrosive gases and vapors
  • Chemical and pharmaceutical labs
  • Environmental testing
  • Sample filtration and evaporation