I have a full 5lb tank that my LHBS loaned me for the weekend. I was wondering if I could hook the 5lb tank to my 20lb tank would gas from the smaller tank go into the bigger one. And should I turn the small tank upside down.
there will undoubtedly be more pressure in the 20# tank, so no, this won't work.
The 20lb tank is empty. And it out of date. That's the only reason i was gonna try this.
Why would there be more pressure in the 20# tank?
i was assuming the volume of gas would be greater in the 20# tank, which would exert more pressure when the valve was opened (seeking equilibrium), but it turns out i was incorrect that any gas existed in the 20# tank.
What are you trying to do? Steal all the co2 that they loaned you?
No I'm not stealing the gas I paid for the gas so it doesn't matter to them if I bring it back empty. They loaned me the tank.
After hearing so many people say how bad the idea is I'm not going to try it. It just dosent seem that crazy to me I don't understand how a 5lb tank could over pressurize a empty 20 lb tank. But regardless of I'm gonna play it safe thank you all for responding to my post.
I was going to just hook them up with a straight pipe and then slowly crack the valve onthe 5 lb
Even if there was co2 in the 20# tank, the pressure differential would be minimal. Volume has no effect. Co2 is stored as a liquid so the pressure remains constant (though temperature will affect pressure) until the liquid is depleted. The pressure then begins to drop.
android said:so, if the 20# tank is full and the 5# tank is empty, gas would transfer from the 20# tank to the 5# tank, right? and pressure doesn't have anything to do with it? i'm just trying to understand.
shtank said:After hearing so many people say how bad the idea is I'm not going to try it. It just dosent seem that crazy to me I don't understand how a 5lb tank could over pressurize a empty 20 lb tank. But regardless of I'm gonna play it safe thank you all for responding to my post.
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