Quote:
Originally Posted by upthesaukee
.... remember that tanks are only filled to 80% to allow for expansion and contraction due to temperature changes.
Dave
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Further on that (on the Amerigas site, too) is this:
https://www.amerigas.com/amerigas-bl...cent-fill-rule
What they could have added, but perhaps considered "too much information," is that there must be adequate vapor space above the liquid level for disengaging of liquid splatter from the top of the boiling surface when the heating system or generator is drawing fuel for use. Propane absorbs heat from the ambient air, through the tank wall, to vaporize liquid for flow through the piping. This boiling must occur, even when the outside temperature is 20 below, to provide at least a few psi of pressure to move propane vapor to the appliance. [OK, perhaps the above is TMI!].