What is Full Vacuum Pressure? – Ducting
What is Full Vacuum Pressure? Full vacuum pressure (and, indeed, all vacuum pressures) more-or-less refers to the absence of anything; anything, in this case, being any type of matter or substance (including molecules of oxygen and other gases). Ducts aspire to reach this level of full vacuum pressure because, when vacuums exist, air immediately rushes into fill the empty space, fueling movement.