Edwards NXDS6iC 4.0 Cfm Chemical-Resistant Dry Scroll Pump


dwards NXDS6iC 4.0 Cfm Chemical-Resistant Dry Scroll Pump

Dry Scroll Pumps

Dry scroll vacuum pumps are positive displacement pumps that use two spiral-shaped scrolls, one fixed and one orbiting, to trap and compress gas molecules. They are oil-free, low maintenance pumps that are commonly used for clean vacuum applications. Since they do not rely on oil for sealing and lubrication, they eliminate the risk of oil contamination and leakage, making them an environmentally-friendly choice.

We in Edwards are driving scroll technologies to its best and we are committed to offer the most sustainable solution now and in the future.

nXDSi Scroll Pumps

Edwards nXDS is the great new shape of dry vacuum pumping.


The nXDS has taken scroll vacuum technology to the next level. Improved performance, exceptional pumping capability, quiet operation and extended service intervals make nXDS the ultimate dry choice. The range covers pumping speeds from 6 to 20 m3/h.


The nXDS6i is our entry performance model in the nXDS range. Standard variant suitable for a large variety of applications; R-variant with blanked gas ballast and C-variant being corrosion resistant.

nXDS6iC - 100-127/200-240V 1Ph 50/60Hz

The nXDS6iC has been modified so that it is more suitable for use on vapour handling processes and may be used in some applications involving corrosive substances. This chemically resistant version is fitted with Chemraz® internal valve pads and stainless steel fittings.

Features and Benefits

  • Quiet operation - Better working environment

  • Hermetically sealed for a lubricant-free vacuum environment - Contamination free process and no oil to dispose of

  • Low power consumption - Low cost of ownership

  • Intelligent and easy to use controls - Flexibility of operation

  • Superior vapour handling - Wider range of applications

  • Long service intervals - Maximised up-time


Connection Vacuum Inlet Flange DN 25 ISO-KF (NW25)
Connection vacuum outlet flange DN 25 ISO-KF (NW25)
Cooling Method Air Cooling (forced - fan)
Pressure Ultimate 2.901 x 10 -4
Supply Voltage 1Ph 100-127/200-240V 50/60Hz


Technical Data

Power requirements 100-127V~10A or 200-240V~6A, 50/60 Hz, 260 watts
Nominal rotational speed 1800 rpm
Displacement 6.8 m3h-1/ 4.0 ft3min-1
Peak pumping speed 6.2 m3h-1/ 3.6 ft3min-1
Ultimate vacuum (total pressure) 0.020 mbar / 0.015 Torr / 15 micron
Minimum standby rotational speed 1200 rpm
Speed control resolution (% of full speed) 1%
Maximum inlet pressure for water vapour 35 mbar
Maximum water vapour pumping rate 110 gh-1
Maximum continuous inlet pressure 200 mbar
Power connector 1-ph IEC EN60320 C13
Recommended fuse 10A, 250Vac rms
Unit/shipping weight 58 Lb / 63 Lb
Unit/shipping dimensions 16.5x10x12" / 20.5x13x14" (DxWxH)
Inlet flange NW25 (KF25)
Exhaust flange NW25 (KF25)
Noise level 52 dB(A)
Vibration at inlet flange < 4.5 mms-1 (rms)
Leak tightness (static) < 1x10-6mbar ls-1
Operating temperature range 10 to 40 C / 41 to 104 F
Edwards part number A73502983
Certification CE, UL, CSA

Edwards NXDS6iC 4.0 Cfm Chemical-Resistant Dry Scroll Pump

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    Edwards NXDS6iC 4.0 Cfm Chemical-Resistant Dry Scroll Pump

    Edwards NXDS6iC 4.0 Cfm Chemical-Resistant Dry Scroll Pump

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