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Rebuilt XDS35i 100-120/200-230V 1PH 50/60Hz | 1-year warranty


  • Part number: A73006983
  • Type of Product: scroll pump
  • Manufacturer: Edwards
  • Inlet: KF40
  • Exhaust: KF25
  • Motor: 1 Phase, 100-120/200-230V, 50/60Hz
  • Pumping speed: 21 CFM
  • Ultimate vacuum: 8 x 10-3 Torr
  • Weight: 105 lbs
  • Condition: Rebuilt with 1-year warranty

The Edwards XDS35i scroll pump is a dry vacuum pump that proves to be a robust and clean vacuum pump solution in a range of applications and processes.

The XDS35i Oil-Free Dry Scroll Vacuum Pump has a patented bearing shield designed to isolate the vacuum environment from all forms of lubricant. This feature ensures that the bearing remains totally dry, as well as protecting it from any process gases. The adjustable gas ballast allows vapor to be handled and opens up the range of applications to many that were previously unsuited to scroll pumps.

The Edward XDS35i scroll pump is optimized for maximum pumping speed at inlet pressures between 1 mbar and 10 mbar making it ideally suited for LCMS and ICPMS applications. Recent improvements in tip seal technology have lead to reduced tip seal wear therefore giving a longer time between service interventions.

Bearing shield
ensures separation between process gases and bearing lubrication to ensure clean vacuum and no possibility of contamination to lubrication from process gases, which prolongs bearing life.
Smart motor drive
means consistent performance globally, pump overload protection and remote start/stop capability.
High flow gas ballast feature
allows pumping of vapors including water vapor at up to 240 gh-1.
Simple single sided scroll design

allows maintenance to be done in minutes for low cost of ownership and maximum up-time.

Take another step

the Enhanced versions offer up to 20% lower peak power requirements during initial pump down which means it has the ability to pump down large volume chambers with no loss of performance and has up to 25% more pumping speed at these roughing pressures which helps on higher frequency cycling applications as well.


Scroll pumps use intermeshing fixed and orbital scrolls to form non-contacting, crescent shaped gas pockets that are continuously compressed by the orbiting action. This means that, unlike oil-sealed rotary pumps, there is no sealant or lubricant required in the swept volume of the pump.

Edwards XDS35i Scroll Pump Applications

• Automotive; brake line and air conditioning evacuation
• Backing turbomolecular  pumps
• Chemical applications including gel dryers and solvent recovery
• Coating systems
• High energy physics
• Mass spectrometry

Call for availability of rebuilt XDS35i with shorter lead times.

Use this resource to help determine the pumping speed you need.
An alternative to this pump is the Edwards XDS46iC Scroll Pump | 35 CFM | Corrosive Version.


User Manual Data Sheet Pump Comparison

For more documentation, please visit DigiVac’s folder.

Technical Specifications


XDS35i Enhanced

Peak pumping speed


35 (21)

Ultimate vacuum (1)

mbar (Torr)

0.01 (0.008)

0.03 (0.02)

Ultimate vacuum with gas ballast 1

mbar (Torr)

0.02 (0.015)

0.04 (0.03)

Ultimate vacuum with gas ballast 2

mbar (Torr)

< 10 (7.5)

Max inlet pressure for water vapour

mbar (Torr)

35 (23)

Water vapour handling capacity GBII



Maximum continuous inlet pressure

mbar a (Torr a)

40 (30)(2)

1000 (760) *

Maximum gas ballast/purge pressure

bar gauge (psig)

0.5 (7)

Motor data

Supply voltage


100-120/200-240 (+/- 10%)

Supply frequency



Nominal rotation speed



Power at ultimate



Motor power



Power connector


EN60320 C19

Recommended fuse, 230 V (115 V)


16 (3) (15)

Physical data


kg (lb)

48 (105)

Inlet connection


Exhaust connection


Noise level at ultimate



Vibration at inlet flange

mms-1 (rms)

< 4.5

Leak tightness (static)

mbar ls-1

< 1 x 10-6

Operating temperature range

°C (°F)

5 to 40 (41 to 104)

* Use at higher inlet pressure speeds up tip seal wear

(1) measured as total pressure

(2) These pumps are designed to pump down from atmosphericpressure, but prolonged operation at inlet pressures higher than specified mayreduce bearing life.

(3) for UK 240 V use 13 A fuse

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Edwards XDS35i scroll pump | dry scroll pump
Rebuild: Edwards XDS35i Dry Scroll Pump | 21 CFM | A73006983 1-year warranty