Does a propane tank absorb propane?

[JB4310]

Set it on a scale and after a runout you'll know what weights you will be looking to refill at.

I thought about that, but it's a bit of a hassle to say the least, I've seen something on grills where the tank is on a beam or something that allows it to float upwards as it empties, as an indicator

Or contact your propane company for a gauge. There's one on my 400.

Thanks

You might also be able to tell by the frost on the tank during heavy usage. This may/may not happen.

I've been looking, but I guess the atmospheric conditions have to be just right, cause except for the first day I haven't seen the frost again.

Pour some hot water on the tank and feel it where it's still cold that is the propane level.

Interesting, have to try it. Does the effective level of propane, go right to or close to the bottom.

JB

 

[Egon]

The effective level wiil go down to the point there is not enough pressure to feed the flame. Just say empty.:thumbsup:

 

[JB4310]

The effective level wiil go down to the point there is not enough pressure to feed the flame. Just say empty.:thumbsup:

But how does that equate to the frost line on the tank, does it go right to the bottom?

JB

 

[Haywire]

You should be heading for a refill at the 1/4 tank line anyway... at least that's what I do. I never want to experience the "Oh crap, I'm out." effect. Of course, if you're exchanging instead of filling, that won't work. You'd be giving gas away. The other recourse is to get a second tank for a reserve, and when the first one runs out, you put the other one on and go do the exchange.

Ian

 

[Egon]

As the tank goes empty the frost line may dissapear as there is no latent heat of evaporation.

 

[crash325]

Years ago (many ) Ford had a tank leaking problem ( No not the Falcon.) I brazed up a few of them. Drain out the gasoline, a little water flush, Then piped in the exhaust from a running auto. Never had a problem or fire. Had to wire bush under coating on some of them.

 

[Johnp33]

I believe every propane tank that you take away to fill has the weight stamped on it. you can get a manifold that will change the tanks automatically when one is empty and raise a flag as to which bottle it is using.

 

[Redneck in training]

Set it on a scale and after a runout you'll know what weights you will be looking to refill at.

You should have two stage regulator. The pressure in the inside line should be very low. I kind of vaguelly remeber it should be 11" WC.

 

[Egon]

, Then piped in the exhaust from a running auto

Exhaust gases can be combustible at certain air ratios. They do not do the job for proper purging.

 

[pat32rf]

You can buy propane gauges for your BBQ tank. They will also fit a 100lb tank, BUT they stay at the same presure reading until ALL the liquid propane is gone, then they go to empty in a few minutes.

I used an OLD (40yrs)20lb tank as one of my air tanks (90psi) for many years. The bottom finally pinholed so I made it into an ash bucket.(plasma cutter) I learned that the OLD tanks seemed thicker than the newer ones, and yes, they are bare steel inside...
I've cut many newer tanks after removing valve and leaving upside down in the sun for a few days, or filling with water, draining and then cutting.
Always get more nervous cutting up old fuel oil(?) tanks or making burning barrels out of 45gallon drums.