Re: A/C techs: will a venturi vac pump work well enough for occasional use?

In article
<1187797858.234184.241910@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
nottoooily@xxxxxxxxxxx wrote:

Your 28 in.hg. evacuation comes out to be 48768 microns.
Not even close, by a bunch.

Last I heard, 28in Hg = 710mm Hg = 94% of atmospheric pressure. Which
is pretty impressive for just a tube with a hole in it! Must be madly
innefficient though.

Impressive is an Inficon Shark vacuum pump that will pull a
system down to 25 microns.

I wouldn't dream of shipping a car that could only be pulled down
to 28 in.hg.
.

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