Flow rate (at atm. pressure)

Up to




Down to


mbar abs.


Up to


bar g

KNF N 922 STE Ex
Robust, Durable, and Ex-proof

KNF N 922 STE Ex comes with explosion protection compliance such as ATEX, IECEx, CCOE, NEPSI, and KOSHA, along with a motor featuring IP 66 protection class.

Like its sibling, this ex-proof pump provides consistent evacuating, transferring, or compressing functions even in difficult conditions. Moreover, the new stainless-steel pump heads further expand the application possibilities.

More Feature Highlights
  • Adjustable performance: the three-phase motor can operate with a frequency converter.
  • Easy servicing: few wearing parts, long periods between required maintenance, and low inspection costs.
  • Optimal condensate: the compressor housing can be turned in 90° intervals as required.
  • Highly gas-tight: Up to 6 x 10-3 mbar × l/s according to type examination.

See also KNF N 922 ST for non explosion-proof models. KNF Modular System permits a wide range of customization options, feel free to contact us to learn more.

  • Flow rate l/min at atm. pressure23
    Ultimate vacuum mbar abs.110
    Operating pressure bar g2.5
    Permissible media temperature °C+5° to +50°C
    Permissible ambient temperature °C+5° to +50°C
    Protection class - motor IP 66
    Protection class - pump IP 54
    Explosion protection - pump parts Ex II 2/2G Ex h IIB+H2 T3 Gb
    Explosion protection - motor Ex II 2G Ex de IIC T4
    • Pump head: stainless steel
    • Diaphragm: PTFE-coated
    • Valves: stainless steel

Related Products

More products available on the category page:

Process Vacuum Pumps and Compressors


Contact Us

Contact Details

Contact Us Top