Diaphragm Gas Pump
N 922 ST Ex
Metric
Imperial
Metric
Imperial
Diaphragm Gas Pump

N 922 ST Ex

  • Flow Rate (max.): 23 l/min
  • Pressure (max.): 2.5 bar (rel.)
  • Vacuum (max.): 110 mbar (abs.)
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Contact Us Frequent Questions

KNF diaphragm gas pumps transfer or compress gases and vapors and generate a vacuum without contaminating the media. Different options are available for application-specific requirements related to size, motor type, control, voltage, chemical resistance, safety, vibration, noise, and temperature resistance. All pump types offer oil-free operation.

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Contact Us Frequent Questions
Benefits
  • Excellent reliability
  • Contamination free transfer
  • Adjustable performance
  • Maintenance-free
  • Low sound level
  • High performance-to-size ratio
Special Features
  • Diaphragm pump
  • High IP class (>44)
  • Ex-proof
Flow Rate (max.)23 l/min
Pressure (max.) 2.5 bar (rel.)
Ultimate Vacuum (max.) 110 mbar (abs.)
Valve Material OptionsStainless steel
Diaphragm Material OptionsPTFE coated
Pump Head Material OptionsStainless steel
Motor Type OptionsAC
  • Analytical instruments
  • Chemical industry
  • Gas analytics
  • Emission monitoring
  • Climate technology
N 922 ST Ex
Datasheet N 922 ST Ex

PDF (1,023 KB) - Datasheet - English

Operating Manual N 922 ST Ex

PDF (8 MB) - Operating Manual - English

3D CAD Model N 922 ST Ex

ZIP (40 MB) - CAD File - English

Process Pump Safety Leaflet

PDF (599 KB) - Operating Manual - English

Flow Rate (max.)23 l/min
Pressure (max.) 2.5 bar (rel.)
Ultimate Vacuum (max.) 110 mbar (abs.)
Valve Material OptionsStainless steel
Diaphragm Material OptionsPTFE coated
Pump Head Material OptionsStainless steel
Motor Type OptionsAC
Benefits
  • Excellent reliability
  • Contamination free transfer
  • Adjustable performance
  • Maintenance-free
  • Low sound level
  • High performance-to-size ratio
Special Features
  • Diaphragm pump
  • High IP class (>44)
  • Ex-proof
  • Analytical instruments
  • Chemical industry
  • Gas analytics
  • Emission monitoring
  • Climate technology
Datasheet N 922 ST Ex

PDF (1,023 KB) - Datasheet - English

Operating Manual N 922 ST Ex

PDF (8 MB) - Operating Manual - English

3D CAD Model N 922 ST Ex

ZIP (40 MB) - CAD File - English

Process Pump Safety Leaflet

PDF (599 KB) - Operating Manual - English

Accessories N 922 ST Ex

Here, you can find an overview of the available accessories for this product. For further details or order requests, please get in touch with our experts. Contact Us
Mounting Kits & Shock Mounts Part No.
Mounting kit shock mounts
Part No. 313180
Mounting kit shock mounts and mounting bracket
Part No. 313181
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