Flow rate (at atm. pressure)

Up to




Down to


mbar abs.


Up to


bar g

KNF N 630 Ex
Robust, Durable and ATEX-Compliant

KNF N 630 Ex is the ATEX-compliant, explosion-proof series of its lineup. The series offers a selection of pump head configurations and connection types. Sporting robust performance with excellent gas tightness and chemical resistance, it is durable even in harsh conditions.

The affixed base rails and shock mounts efficiently reduce the noise and vibration during operation for N 630 Ex. Additionally, its flame-proof motor comes with a terminal box, further enhancing the overall safety and making the installation easier.

The N 630 Ex fulfills the criteria for completed machinery according to directive 2006/42/EC and therefore comes with the CE mark.

Model Comparison
ModelDescriptionMax flow rate
50 | 60 Hz
bar g
mbar abs.
N 630 ExOne-headed vacuum pump
and compressor
30 | 354120
N 630.15 ExTwo-headed compressor / serial30 | 35970
N 630.3 ExTwo-headed vacuum pump / serial30 | 350.525
N 630.1.2 ExTwo-headed compressor / parallel58 | 684120

Other versions are also available:

  • Flow rate l/min at atm. pressure35
    Ultimate vacuum mbar abs.120
    Operating pressure bar g4
    Permissible media temperature °C+5° to +40°
    Permissible ambient temperature °C+5° to +40°
    Explosion protection - three-phase motor Ex II 2G Ex de IIC T4 Gb
    Explosion protection - pump parts Ex II 2G Ex h IIB+H2 T3 Gb
    Protection class - motor IP 55
    Protection class - pump IP 20
    • Pump head: stainless steel
    • Diaphragm: PTFE-coated
    • Valves: stainless steel

Related Products

More products available on the category page:

ATEX-Compliant Diaphragm Gas Pumps

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