Quote Originally Posted by Stu Cool View Post
How well do these type of A/C vacuum pumps work? How much compressor air do they consume? I have a very occasional need to evacuate an A/C system and wonder if one of these would meet my needs versus a motor driven pump. I have a mid sized shop compressor with a 60 gallon tank.

http://www.ctd4ac.com/pdf/22-1600%20instructions.pdf

thanksPat
they use a lot of air and not correct for evacuating an ac system best bet is maybe buy an inexspensive vacuum pump from Harbor freight. or you can make one from a rotory compressor from a refrig. old GE compressors. I put one asside years ago.ED