Vacuum Training The lost Art Vacuum 201 

This video 201 is golden for showing a boss that cares. It's convincing, scientifically. Also I am SO happy to see this series, BIG 👍

Thanks for the video. If someone ever questions me using larger hoses direct to the pump with no manifold, ill just tell them watch this video.

Hi Jim, I constantly follow your Tutorials I respect you very much, you can show me some specialized literature for the HVAC sector, obviously I don't hope to find them in Italian translation, it is also good in English, thanks from a colleague who lives in Tuscany - Italy

Thank you, great info!

You said the deepest vacuum we can get is -14.696 in/hG... do you mean pounds per square inch (gauge,) since 1 atm is 14.7 psi at sea level? I assume we could reach closer to -28 to -29.5 in/hG (gauge) which is near a perfect vacuum. Obviously, we can never hit perfect. Thanks for some math

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