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Accessories

 

Direct-Drive High Vacuum Pumps

 

Welch Direct-Drive Vacuum Pumps achieve vacuum levels down to 1x10-4 torr (0.1 micron) with flows up to 11.3 CFM. These compact, portable pumps are recommended for a variety of laboratory applications:

Vacuum system configuration with a cold trap is recommended for use with harsh chemicals. Direct drive pumps are not recommended for filtration, aspiration, drying electrophoresis gels, or other applications requiring sustained operation above 30 torr.

Click on a category for ordering & specifications.

Compact
  Model CFM @ 60Hz (M3/hr-1 @ 50Hz)

8905A
8905 1.8 (2.6)
GEM
  Model CFM @ 60Hz (M3/hr-1 @ 50Hz)
GEM
8890A
8890 1.1 (1.6)
Medium
  Model CFM @ 60Hz (M3/hr-1 @ 50Hz)
Direct Drive Medium Pumps
8907A
8907 2.6 (3.7)
8912 3.8 (5.4)
8917 6.1 (8.6)
Large
  Model CFM @ 60Hz (M3/hr-1 @ 50Hz)
Direct Drive Large Pumps
8920A
8920 7.7 (10.9)
8925 11.0 (16)