On 2009-09-16, Joe wrote:

Harbor Freight is usually not my first choice, but I'm looking there now.

I'd go for it. Rotary vane pumps aren't rocket science. I doubt it
would pull 75 microns, but it should do what it was intended to, pull
moisture out of refrigeration lines. Just keep the oil fresh. Better
yet, invest in some high grade vac pump oil. If you can replace the
1/4" fitting with 3/8" and use corresponding sized hose, that would
work better. Besides, the worst you can say about it is, "it sucks".

nb