KNF · Diaphragm Gas Pump

NMP 850

The KNF NMP 850 is a micro diaphragm gas pump engineered for reliable operation, delivering up to 4.5 l/min, at up to 2.5 bar (rel.), with vacuum to 230 mbar (abs.). It is built with a PPS pump head, EPDM, PTFE coated diaphragm options, EPDM, FFKM valve options and DC, Brushless DC motor, and offers oil-free, high performance-to-size ratio, low sound level, contamination-free transfer, maintenance-free, highly resistant to aggressive media, self-priming, can run dry, low pulsation and flow-tight in Off mode (NC valve). The pump is contamination-free transfer and FDA-approved materials available, and features digitally adjustable motor.

The NMP 850 is widely used in inkjet printing, analytical instruments, lab equipment, agriculture, automotive, chemical industry, climate technology, gas analytics, emission monitoring, food & beverage, security & defense, vacuum technology, fuel cells and cleaning & disinfection.

  • Flow rate: 4.5 l/min
  • Pressure: 2.5 bar
  • Vacuum: 230 mbar

Frequently Asked Questions

What is the maximum flow rate of the NMP 850?

The NMP 850 delivers up to 4.5 l/min at 2.5 bar (rel.) with vacuum to 230 mbar (abs.).

Is the NMP 850 self-priming and can it run dry?

Yes — the NMP 850 is self-priming and can run dry without damage.

Which wetted materials are available for the NMP 850?

The NMP 850 is available with heads: PPS; diaphragms: EPDM, PTFE coated; valves: EPDM, FFKM.

Manufacturer page and datasheet

Contact LDR Technologies about NMP 850