Edwards nXDS35i Oil-Free Dry Scroll Vacuum Pump – 21 CFM (A73001983)
The Edwards nXDS35i (part number A73001983) is the highest-capacity pump in the nXDS series of oil-free dry scroll vacuum pumps. With a powerful pumping speed of 21 CFM (35.4 m³/h) at 60 Hz and an ultimate vacuum of 0.005 Torr (0.7 Pa), it delivers fast, clean, and reliable vacuum performance without oil contamination or backstreaming risks.
Designed for demanding laboratory and light industrial applications, the nXDS35i features hermetically sealed bearings, an integrated inverter drive, and intelligent controls for quiet, efficient operation with long service intervals.
Key Features & Benefits
- Completely oil-free dry scroll technology – no oil changes required
- Highest pumping speed in the nXDS series for faster evacuation times
- Very quiet operation at only 52 dB(A)
- Hermetically sealed for ultra-clean vacuum environment
- Excellent water vapor handling with gas ballast
- Long tip seal life – up to 5 years in many applications
- Low power consumption and compact footprint
- NW40 inlet and outlet flanges for high flow
Technical Specifications
| Specification |
Value |
| Pumping Speed (60 Hz) |
21 CFM (35.4 m³/h) |
| Displacement (60 Hz) |
26.4 CFM (44.8 m³/h) |
| Ultimate Vacuum (without gas ballast) |
0.005 Torr (0.7 Pa) |
| Ultimate Vacuum (with gas ballast) |
0.030 Torr (0.040 mbar) |
| Noise Level |
52 dB(A) |
| Power Supply |
100-127 / 200-240V, 1-phase, 50/60 Hz |
| Power Consumption (at ultimate) |
~300–350 W |
| Inlet / Outlet Flange |
NW40 (DN 40 ISO-KF) |
| Weight |
28.5 kg (62.8 lbs) |
| Cooling Method |
Air-cooled (forced fan) |
Ideal Applications
- Laboratory vacuum systems requiring high throughput
- Mass spectrometry and analytical instruments
- Electron microscopy and vacuum coating
- Vacuum ovens and freeze drying
- Backing for turbomolecular and diffusion pumps
- General clean vacuum processes in research and industry
The Edwards nXDS35i offers the highest pumping capacity in the nXDS range while maintaining the signature oil-free, quiet, and low-maintenance performance that makes the series the preferred choice for modern laboratories.
Edwards nXDS35i Oil-Free Dry Scroll Vacuum Pump – 21 CFM (A73001983)
The Edwards nXDS35i (part number A73001983) is the highest-capacity pump in the nXDS series of oil-free dry scroll vacuum pumps. With a powerful pumping speed of 21 CFM (35.4 m³/h) at 60 Hz and an ultimate vacuum of 0.005 Torr (0.7 Pa), it delivers fast, clean, and reliable vacuum performance without oil contamination or backstreaming risks.
Designed for demanding laboratory and light industrial applications, the nXDS35i features hermetically sealed bearings, an integrated inverter drive, and intelligent controls for quiet, efficient operation with long service intervals.
Key Features & Benefits
- Completely oil-free dry scroll technology – no oil changes required
- Highest pumping speed in the nXDS series for faster evacuation times
- Very quiet operation at only 52 dB(A)
- Hermetically sealed for ultra-clean vacuum environment
- Excellent water vapor handling with gas ballast
- Long tip seal life – up to 5 years in many applications
- Low power consumption and compact footprint
- NW40 inlet and outlet flanges for high flow
Technical Specifications
| Specification |
Value |
| Pumping Speed (60 Hz) |
21 CFM (35.4 m³/h) |
| Displacement (60 Hz) |
26.4 CFM (44.8 m³/h) |
| Ultimate Vacuum (without gas ballast) |
0.005 Torr (0.7 Pa) |
| Ultimate Vacuum (with gas ballast) |
0.030 Torr (0.040 mbar) |
| Noise Level |
52 dB(A) |
| Power Supply |
100-127 / 200-240V, 1-phase, 50/60 Hz |
| Power Consumption (at ultimate) |
~300–350 W |
| Inlet / Outlet Flange |
NW40 (DN 40 ISO-KF) |
| Weight |
28.5 kg (62.8 lbs) |
| Cooling Method |
Air-cooled (forced fan) |
Ideal Applications
- Laboratory vacuum systems requiring high throughput
- Mass spectrometry and analytical instruments
- Electron microscopy and vacuum coating
- Vacuum ovens and freeze drying
- Backing for turbomolecular and diffusion pumps
- General clean vacuum processes in research and industry
The Edwards nXDS35i offers the highest pumping capacity in the nXDS range while maintaining the signature oil-free, quiet, and low-maintenance performance that makes the series the preferred choice for modern laboratories.
Edwards nXDS35i Oil-Free Dry Scroll Vacuum Pump – 21 CFM (A73001983)
The Edwards nXDS35i (part number A73001983) is the highest-capacity pump in the nXDS series of oil-free dry scroll vacuum pumps. With a powerful pumping speed of 21 CFM (35.4 m³/h) at 60 Hz and an ultimate vacuum of 0.005 Torr (0.7 Pa), it delivers fast, clean, and reliable vacuum performance without oil contamination or backstreaming risks.
Designed for demanding laboratory and light industrial applications, the nXDS35i features hermetically sealed bearings, an integrated inverter drive, and intelligent controls for quiet, efficient operation with long service intervals.
Key Features & Benefits
- Completely oil-free dry scroll technology – no oil changes required
- Highest pumping speed in the nXDS series for faster evacuation times
- Very quiet operation at only 52 dB(A)
- Hermetically sealed for ultra-clean vacuum environment
- Excellent water vapor handling with gas ballast
- Long tip seal life – up to 5 years in many applications
- Low power consumption and compact footprint
- NW40 inlet and outlet flanges for high flow
Technical Specifications
| Specification |
Value |
| Pumping Speed (60 Hz) |
21 CFM (35.4 m³/h) |
| Displacement (60 Hz) |
26.4 CFM (44.8 m³/h) |
| Ultimate Vacuum (without gas ballast) |
0.005 Torr (0.7 Pa) |
| Ultimate Vacuum (with gas ballast) |
0.030 Torr (0.040 mbar) |
| Noise Level |
52 dB(A) |
| Power Supply |
100-127 / 200-240V, 1-phase, 50/60 Hz |
| Power Consumption (at ultimate) |
~300–350 W |
| Inlet / Outlet Flange |
NW40 (DN 40 ISO-KF) |
| Weight |
28.5 kg (62.8 lbs) |
| Cooling Method |
Air-cooled (forced fan) |
Ideal Applications
- Laboratory vacuum systems requiring high throughput
- Mass spectrometry and analytical instruments
- Electron microscopy and vacuum coating
- Vacuum ovens and freeze drying
- Backing for turbomolecular and diffusion pumps
- General clean vacuum processes in research and industry
The Edwards nXDS35i offers the highest pumping capacity in the nXDS range while maintaining the signature oil-free, quiet, and low-maintenance performance that makes the series the preferred choice for modern laboratories.
