KNF LABOPORT Diaphragm Vacuum Pump N 840 G

KNF LABOPORT Diaphragm Vacuum Pump N 840 G
LABOPORT rethought – unique handling and simple design.

The vacuum pump type N 840 G is manually adjustable by means of a rotary knob and can therefore be used in a wide variety of applications.
The speed control makes the pumps very energy-efficient and quiet in use.

The chemical-resistant diaphragm pumps are suitable for very aggressive gases. It is characterized by a very small footprint and saves valuable space in the laboratory. The pumps of the new LABOPORT generation are equipped with an easy to clean surface.

Applications: e.g. rotary evaporation, distillation, gel drying, degassing

Further advantages:

  1. Delivery rate up to 2.04 m3/h
  2. Adjustable by integrated speed control
  3. Final vacuum 6 mbar absolute
  4. TFMTM PTFE pump head in combination with PTFE-coated membrane are ideal for very aggressive/corrosive gases and vapours
  5. High steam and condensate compatibility
  6. Integrated gas ballast valve
  7. 3-colour status display for in operation / stand-by / fault
  8. Expandable: simply buy and install separators and/or condensers separately – and the precisely fitting vacuum system is ready to go
  9. ATEX compliant according to II 2/-G IIB+H2 T3 internal atmosphere only
  10. 100 % oil-free production – therefore undistorted pumping, evacuation and compression
  11. Environmentally friendly
  12. Tip: Combined with the vacuum controller VC 900 and control cable, the speed is controlled according to the requirements of the process. Can also be combined with all common vacuum controllers with valve control.
  13. Model of pump: Membrane vacuum pumplaboratory pumpdiaphragm pump
  14. Max. Conveying capacity: 34 l/min2,04 m³/h
  15. Shipping weight: 14,80 Kg
  16. Product weight: 11,30 Kg
  17. Dimensions: × × cm


KNF LABOPORT vacuum pump N 840 G
Förder rate [m3/h] at atmospheric pressure 2.04
Förder rate [l/min] at atmospheric pressure 34
End vacuum [mbar absolute] 6.0
Operating pressure [bar] 0.1
Nominal voltage [V] 100-240
Frequency [Hz] 50/60
Ingress protection IP30
Power P1 [W] 100
Current consumption [A] 0.7
With thermal switch and mains fuse
Pump head TFMTM PTFE
Diaphragm PTFE-coated
Valves FFPM
Weight [kg] 11.3
Hose connection ID 9.5-8, PVDF
Dimensions W x H x D [mm] 177 x 240 x 289
Allowable media and
ambient temperature [°C]
+5 to +40


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