Propane - when is a fill a true fill
Over the years (12) I have had my propane tanks filled using two methods to determine when the tank is full, by weight using a scale and the second filling until propane escapes from a bleeder valve. ...
Forum Discussion
mowermech wrote:
If a propane cylinder is properly filled, whether by weight or volume, it is filled until the 80% valve shows liquid propane OR the OPD shuts off the flow, whichever comes first. IF the flow is stopped at that point, the cylinder is NOT overfull! In fact, if the cylinder has a properly functioning OPD, it can not be overfilled!
If it does not have an OPD, it should not be filled!
Yes, these both had OPD valves. The issue is that propane contracts when cold and expands when warm. When I had my tank filled at zero degrees it was possible to get more gas in the cylinder because it was cold. The total volume started to expand as I drove further south and it got much warmer.
Had the tank been filled by weight I don't think this would have been an issue.
