diaphragm vacuum pump / oil-free / single-stage / chemical-resistant



  • Technology:


  • Lubrication:


  • Number of stages:


  • Other characteristics:

    compact, low-noise level, chemical-resistant

  • Applications:

    for laboratories, for medical applications, for the chemical industry, for exhaust gas, for mass spectrometry, air sampling, chemical process, for pharmaceutical applications, for the plastics industry, water, for recycling, for liquid transfer, for fuel cells, for distillation

  • Flow rate:

    7.1 m³/h, 7.8 m³/h (250.73 ft³/h)

  • Ultimate vacuum:

    70 mbar (1.02 psi)


Chemistry-design diaphragm pumps are an excellent solution for continuous, oil-free pumping of corrosive gases and vapors. The one-stage construction provides the advantageous combination of high pumping speed and low ultimate vacuum down to 70 mbar. All major parts in contact with pumped media are made of chemically resistant fluoroplastics. Well-proven PTFE sandwich diaphragms for increased reliability and extended operating life. These large pumps have an exceptionally high pumping speed. The NT-series features further improved performance data and superior vapor tolerance.

Performance features
outstanding chemical resistance and superior vapor tolerance
exceptionally high performance even at low vacuum
compact design
whisper quiet and very low vibration
long diaphragm life, maintenance-free drive system

Technical data

Number of heads / stages 4 / 1
Max. pumping speed at 50/60 Hz m3/h 7.1 / 7.8
Max. pumping speed at 50/60 Hz cfm 4.2 / 4.6
Ultimate vacuum (abs.) mbar/torr 70 / 52
Ambient temperature range (operation) °C 10 - 40
Ambient temperature range (storage) °C -10 - 60
Max. back pressure (abs.) bar 1.1
Inlet connection Hose nozzle DN 8-10 mm