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Old 07-11-2013, 08:51 AM   #11
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They also make those stick-on magnet "level guages" that work based on the fact the liquid propane will be at a different temperature than the gaseous propane above it. I never had much luck with them. The way I test my tanks is lightly tap on them and listen to the sound. I always manually switch the valve between tanks, so one is always full while the other is in use. The full tank is the reference. You can train your ear to the sound and get a pretty good idea how much liquid is left in the tank.


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Old 07-11-2013, 09:04 AM   #12
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Originally Posted by DXSMac View Post
Well, I had a tank filled to 80% once, then when I went to a higher elevation, the needle shot WAY PAST THE FULL mark. I was concerned!
As Herk stated in post 5, the propane tank is a closed system and is not influenced by altitude, just heat.

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Old 07-12-2013, 09:32 AM   #13
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Originally Posted by gasman6674 View Post
There are not any rules that I am aware of that prohibit a float gauge in a cylinder. Manchester and Worhington both offer a tank with a gauge. You can also retrofit existing 20 and 30# tanks with a new OPD gauge valve so you can have an accurate level indication.
Ive never seen a valve with a float gauge. I'd like that. I remove my tanks and weigh them before every trip. My back ain't what it used to be!

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