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Good vacuum pump for hobby?
As some already know refrigeration is a hobby of mine so I don't do it much. I'm in need of a good vacuum pump for occasional use and am curious if anyone could recommend one? I looked at a few made by CPS but don't know where they rank in the scheme of things.
Also is a digital vacrometer really needed or is the one on most manifold sets good enough? I have a set of Yellowjacket II brute gauges as well as a CPS R134A set.
My main projects will be refrigerators which have refrigerants that are very sensitive to moisture so a good vacuum is important. I have all the time in the world when doing this so speed isn't an issue but I want a good strong vacuum.
Thank you for your time and as always all comments are welcome.
Single pipe quasi-vapor system.
Typical operating pressure 0.15 - 0.43 oz measured with Magnehelic. High pressure limit set to 4.6oz. Weil-McLain EG-40 with barometric damper connected to 392sqft of radiation via two 2" risers into a 3" drop header and 2" equalizer. ES-20 Advanced Control for Residential Steam boilers. Rectorseal Steamaster water treatment
Steam system pictures updated 1/25/15.https://picasaweb.google.com/thetube0a3/Boiler?authkey=Gv1sRgCImUxIqv9436MQ#