Forum Discussion

Explorer

Dec 19, 2014

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. When I picked up the tanks after filling I noticed that when they were filled using the bleeder valve method the tanks were heavier & lasted longer. I know which filling method I prefer, but is there a correct method? I have never had any problems using the tanks filled by either method.
Skeptics might doubt about the ability to feel the difference but over time you learn to notice differences visually and physically and although I have never weighted the tanks when filled by the bleeder method the weight feels about 2 pounds heavier. All I know they last longer.

Seeking Advice

34 Replies

HappyKayakers
Explorer III
Dec 19, 2014
It's been my observation that not all propane dispensers are trained equally. Some may use a 'standard' weight for your cylinder instead of actually looking at the tare weight stamped on the collar, then adding for the weight of the nozzle and unsupported hose.
beemerphile1
Explorer
Dec 19, 2014
LynnandCarol wrote:
I watched them fill ours last week and they were being weighed at the same time, the bleeder valve started to bleed out @ exactly 7.3 lbs. This is for the 30lb. tank.

I think you meant 7.3 gallons.
beemerphile1
Explorer
Dec 19, 2014
I highly doubt they were two pounds heavier but any of three methods is acceptable;
fill till bleeder releases liquid
fill till OPD shuts off flow
fill by weight

All three methods should fill to the same point.

I always use a digital fish scale to weigh the LPG DOT cylinders. It is nearly impossible by normal means to weigh a tank that is bolted to a chassis. ;)
LynnandCarol
Explorer
Dec 19, 2014
I watched them fill ours last week and they were being weighed at the same time, the bleeder valve started to bleed out @ exactly 7.3 Gallons. This is for the 30lb. tank.