HVAC Know It All - After a recent conversation regarding vacuums and units of measure I found this handy conversion table. 1" Hg Absolute is equal to about roughly 1/2 PSIA. Pressure
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Rapid Dehydration Set-up - FUNDAMENTAL REFRIGERATION
Amazon.com: 57119 3 1/2" (89 mm) Central Vacuum Conversion Kit [PRICE is per PART]
Vacuum Unit Conversion Chart, An ISM Resource | ISM
Vacuum Unit Conversion Chart, An ISM Resource | ISM