Flow rate (at atm. pressure)

Up to




Down to


mbar abs.


Up to


bar g

KNF N 630.3 Ex
ATEX-Compliant, Two-Headed Vacuum Pump with Serial Connections

KNF N 630.3 Ex is the two-headed ex-proof vacuum pump with serial connections in the N 630 lineup. The pump comes with stainless-steel pump heads and valves along with PTFE-coated diaphragms, providing a flow rate of up to 35 l/min, an ultimate vacuum of down to 25 mbar abs., and a pressure of up to 0.5 bar g.

Features and Benefits
  • ATEX compliance
  • Durable even in harsh operating conditions
  • High gas tightness up to 5 x 10-5 mbar x l/s
  • High chemical resistance
  • Flameproof motor with an intrinsically-safe terminal box for simple installation
  • Quiet-running and low vibration
  • Fulfilling the criteria for completed machinery according to directive 2006/42/EC, therefore comes with the CE mark

For applications requiring explosion protection and strict gas leak prevention, refer to N 630 Ex Double Diaphragm Series. Feel free to contact us for accessories, spare parts, and custom-fit solutions.

  • Flow rate l/min at atm. pressure35
    Ultimate vacuum mbar abs.25
    Operating pressure bar g0.5
    Permissible media temperature °C+5° to +40°C
    Permissible ambient temperature °C+5° to +40°C
    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

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ATEX-Compliant Diaphragm Gas Pumps

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