How much does a 5# CO2 cylinder weigh?

I ask this because I got my supposed 5# cylinder filled up about a month and a half ago. I have run ~4 kegs through mine, force carbing each of them, and one of them was a soda keg of rootbeer, which has to be force carbed and served at higher pressures. Anyway, I weighed the cylinder last night and its telling me I have used 1.5# to carb and serve 4 kegs, meaning I have 3.5# left. When I researched how many kegs you are supposed to be able to carb and serve off a 5# cylinder, most agreed you could get 5 or 6. If my math is correct, I should be getting 13 or more off a single fill. That does not sound right at all.

FYI: My cylinder says it weighs 7.53# empty. I weighed it last night and I was at 11# meaning I have 3.5# left. you can easily feel the CO2 sloshing around in there if you shake it.

The 5 or 6 kegs is for 1/2 barrels. Homebrew kegs (5 gal) should be 15 or more. Since you are using extra to force carb, your number will be about the 13 you are estimating.

Really? Thats awesome news! That means I don't have to go get it filled today before the weekend at the cabin.

What!? No. 4-5 kegs of 5G cornies off one fill. Unless my setup is horribly inefficient, which i don't understand how it would be. Are you weighing it with the regulator on?

I've never achieved such high numbers, but I don't really track it that well.

They say 15-22

samc said:

I've never achieved such high numbers, but I don't really track it that well.

They say 15-22

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That is dispensing only, not carbonating.

Did you weigh it when you brought it home? They could have over filled it. Not safe, but possible.

IrregularPulse said:

That is dispensing only, not carbonating.

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+1

Usually I'll push and carb around 6 kegs with one 5 lb co2 tank granted I'm not doing anything crazy like filling empty kegs with Co2.

I do 4-5 then take it to get filled. I never let it go empty so I could maybe get more.

Stupid internet is down at home. Posting from my blackberry. Anyway, I weighed it without the regulator on of course. I suppose they could have overfilled it but I seem to remember they put 5 lbs in. Just checked the receipt, says 5 lbs. Well, I hope it has enough left for these last 2 - 1/2 kegs I have with me for this weekend.

IrregularPulse said:

I do 4-5 then take it to get filled. I never let it go empty so I could maybe get more.

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I'm dispensing at least 22-24 before filling (no carbing). I go through about 1 keg a week and usually fill the 5# co2 every 6 months.

A regulator probably weighs close to 1 pound.

5-8 cornies, carbing AND dispensing is the range I usually see thrown around.

Hard for me to verify, because I run 2 kegs off a 5lb and 3 kegs off a 10lb tank.

1st tank was 12 1/6th barrels. Second tank was 4 1/6 barrels, 2 force carbs, 1 soda keg at 40psi.

I could see 15 corneys that were already kegged no problem.