Welch Pump Spec Sheet Here

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Here's a list of Welch pump models and their ultimate pressures.

The good pumps:

1e-6 Torr: 1392
5e-5 Torr: 1405H
1e-4 Torr: 1397, 1398, 1400, 1402, 1405B

Any of the above pumps will support most amateur fusion vacuum requirements, where the 1 micron range seems to be common for glow mode.

Now, the not so good pumps:

5e-3 Torr: 1403, 1406
1.5e-2 Torr: 1399
2e-2 Torr: 1404, 1410

The above pumps will be fine for most demo fusors, but do not pay actual money for these as an old refridgerator or A/C pump will do just as good and can be had for free.

Adam Parker



Created on Tuesday, April 17, 2001 4:55 PM EDT by Adam L. Parker
Last Modified on Tuesday, May 08, 2001 12:12 AM EDT by Adam L. Parker