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Welch 8905 Direct Drive Pump

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35.00 LBS
Calculated at checkout

Product Description

Welch 8905 Direct Drive Pump






Great for vacuum ovens!!

Product Details

  • Deep Vacuum
  • Laboratory Vacuum Pump
  • Portable with small footprint
  • Vacuum to 1 X 10-4 torr

Common Applications:

Centrifugal Concentrators, Vacuum Ovens, Freeze Dryers, SEM's, Annular Spaces / Transfer Lines

The Welch 8905A Direct Drive vacuum pump is a robust vacuum pump for applications requiring pressures < 50 Torr. The  8905A achieves < 0.050 Torr with a pumping speed of 51 liters/min (1.8 CFM).

These small direct drive, oil sealed vacuum pumps should not be operated continuously at pressures above 50 Torr. Operating this vacuum pump at higher pressure will induce excessive oil spraying from the exhaust of the vacuum pump causing premature failure and void warranty. 


Vacuum Pump Supply has a full range of repair parts and accessories for your pumps.

What's included 1 qt vacuum oil
Common accessory, not included Exhaust Filter
Pumping Speed 1.8 CFM (51 lit/min.)
Max. Vacuum 0.050 Torr
Oil Capacity 0.42 qts
Tubing Needed Accepts 3/16" or 7/16" ID hose
Inlet Connection Unibarb (3/4 -20)
Intake / Exhaust threads 3/4-20
Pump RPM @ 60 hz 3450
Dimensions LxWxH 14.5x5.1x8.4
Weight 24.5 LBS
Wiring Wired for 115v, 60 Hz, 1 ph with N. American 115v Plug

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