Flow rate (at atm. pressure)

Up to




Down to


mbar abs.


Pump, separator, condenser & base plate

Robust Design with Fast Solvent Recovery

KNF LABOPORT SH 840 G is a laboratory vacuum pump system comprising an N 840 G diaphragm pump, a base plate, a separator on the suction side, and a high-performance condenser on the pressure side. 

Alongside its modern, refreshing look, the LABOPORT SH 840 G comes with a robust, durable design. Fast solvent recovery, high chemical resistance, and broad compatibility with vapors and condensates make it a reliable choice for everyday laboratory works.

The LABOPORT SH 840 G delivers a flow rate of up to 34 l/min, an ultimate vacuum of down to 6 mbar abs., and a pressure of up to 0.1 bar g. The system can start against the ultimate vacuum, and integrates with a gas ballast valve and rotational speed control.

User-Friendly and Modularly-Expandable

A new three-color display indicating current status (in-operation, standby, and error) enables quick response to the process from users. Moreover, the LABOPORT SH 840 G is modularly expandable with easy-to-fit parts and accessories.

KNF VC 900 works with the LABOPORT SH 840 G, offering an intuitive touchscreen interface and more precise vacuum control.

Possible Areas of Use

Typical applications include:

  • Distillation
  • Rotary evaporation
  • Multi-user vacuum system

The all-new LABOPORT series is overhauled with many user-centric enhancements, providing a selection of high-quality pumps and vacuum systems. For more information, feel free to contact us.

  • Flow rate l/min at atm. pressure34
    Ultimate vacuum mbar abs.6
    Permissible media temperature °C+5° to +40°C
    Permissible ambient temperature °C+5° to +40°C
    Voltage V100 – 240 V
    Frequencies Hz50/60 Hz
    Power P1 W60 W
    Weight kg14.1 kg
    Dimensions W×H×D (mm)340×416×274
    Operating pressure bar0.1
    Operating current 0.6 A (240 VAC); 1.0 A (100 VAC)
    Protection class IP 30
    Inlet hose connections For hose ID 8 ‒ 9.5
    Outlet hose connections For hose ID 10
    • Pump head: TFM™ PTFE
    • Diaphragm: PTFE-coated
    • Valves: FFPM

Related Products

More products available on the category page:

Laboratory Vacuum Pump Systems


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