Propane tanks on 5th wheel
Just got a 5th wheel and wondering - do you remove the propane canisters to refill or can it be done while they are in the trailer?
Forum Discussion
Old-Biscuit wrote:
Many times the propane 'cylinders' are shipped filled with compressed air.
Air and propane do not mix well inside the cylinders and must be purged with LIQUID propane 4x-5x before filling with vapor.
Just filling with vapor will not purge the air out and then you will have issues with popping inside cylinders, regulators failing, propane flow issues etc.
This makes no sense. They don't fill the tanks with vapor. They fill with liquid. The liquid boils off at low temperatures (well below freezing), so filling and emptying the liquid 4-5 times wont' do much of anything. The first time full will eliminate the vast majority of the air and when you open the valve, the liquid propane vaporizing will push the air out.
The first fill and letting the air bleed out is the purge. If you are going thru 4-5 tanks of L (liquid) PG you are doing something wrong.
