PROPANE

I have never known # to mean gallons.

A 23.9 tare weight tank would be barely larger than a 20# tank which holds less than 5 gallons when full. Propane is about 4.25#/gal.

Tare weight on my 5 gallon propane tank is 18#
Tare weight on my 7.5 gallon tank is 24.5#
Tare weight on my 1.0 gallon tank is 9.4#

Dutch_12078 wrote:

mowermech wrote:
The misplacement of the "#" sign is one of the many things that are all too common.
Generally, if the "#" sign is IN FRONT or the number, it means "number", as in "You #10!"
If the "#" sign is after a number, it means "pounds".
I agree, the 23.9# probably means that the TARE (empty) weight of the cylinder is 23.9 pounds.

Except that the OP does not have a DOT "cylinder", he has an ASME "tank". 23.9 is the gallons rating for his 100 LB propane tank. The tare weight is typically not stated on ASME tank labels, since they're never filled by weight.

I used to own a 100 lb. propane cylinder. That thing weighed a lot more than 25 lbs. when empty, and it was HUGE! I have never seen a tank that big on any motorhome (but then, I haven't seen EVERY motorhome there is).
Maybe I'll go look at MY ASME tank on my 32 foot motorhome, and see what identification is on there.

mowermech wrote:

Dutch_12078 wrote:

mowermech wrote:
The misplacement of the "#" sign is one of the many things that are all too common.
Generally, if the "#" sign is IN FRONT or the number, it means "number", as in "You #10!"
If the "#" sign is after a number, it means "pounds".
I agree, the 23.9# probably means that the TARE (empty) weight of the cylinder is 23.9 pounds.

Except that the OP does not have a DOT "cylinder", he has an ASME "tank". 23.9 is the gallons rating for his 100 LB propane tank. The tare weight is typically not stated on ASME tank labels, since they're never filled by weight.

I used to own a 100 lb. propane cylinder. That thing weighed a lot more than 25 lbs. when empty, and it was HUGE! I have never seen a tank that big on any motorhome (but then, I haven't seen EVERY motorhome there is).

Maybe I'll go look at MY ASME tank on my 32 foot motorhome, and see what identification is on there.

Please do go look at your ASME tank. But in the meantime, here's a photo of the label on MY ASME tank. Note the 29.3 gallon rating that at 60 deg.F equates to a 123.6 LB capacity or 98.88 LBS with the required 20% expansion allowance.

2oldman wrote:
I have never known # to mean gallons.

And it doesn't necessarily mean pounds either. Without seeing exactly how it's used on the OP's tank, I have no idea what it means. A photo of the tank label would be helpful in sorting it out, but it makes no sense at all that a 32' motorhome would have a 23.9 pound propane tank, either capacity or tare weight.

mowermech wrote:
The misplacement of the "#" sign is one of the many things that are all too common.
Generally, if the "#" sign is IN FRONT or the number, it means "number", as in "You #10!"
If the "#" sign is after a number, it means "pounds".
I agree, the 23.9# probably means that the TARE (empty) weight of the cylinder is 23.9 pounds.

All the kids call the # a "hashtag"now.

You might try checking your coach's webpage to see if they offer owner's manuals for each year of production. That's what I did for my Adventurer & it has been quite helpful.

I called Damon (now THOR) and they don't have any manuals that far back. I'll just ask the propane attendant next time I fill it. Thanx to all. TJ