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Old 07-06-2009, 11:15 PM   #1
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Default Dead end on CO2 leak

I thought I had the problem solved, but then I went on vacation for 3 weeks and when I got back my CO2 tank was empty (again...).

My latest attempt at finding the leak was to stick the keg and co2 tank and regulator setup into a bathtub full of water. I spent a lot of time looking for bubbles in the water but I could not find any.

I filled the 5# CO2 tank two months ago, and since then it was used to fill maybe 24 bottles and dispense maybe 4 glasses of beer. For the rest of the time it was connected to 2 corny kegs in a fridge.

I am starting to wonder if CO2 tank will last either XX number of glasses dispensed, or 2 months of time, whichever comes first. I doubt this is normal for most people, but does anyone else have a problem with CO2 dissapearing after 2-3 months of not dispensing any beer?

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Old 07-06-2009, 11:17 PM   #2
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I thought I had the problem solved, but then I went on vacation for 3 weeks and when I got back my CO2 tank was empty (again...).

My latest attempt at finding the leak was to stick the keg and co2 tank and regulator setup into a bathtub full of water. I spent a lot of time looking for bubbles in the water but I could not find any.

I filled the 5# CO2 tank two months ago, and since then it was used to fill maybe 24 bottles and dispense maybe 4 glasses of beer. For the rest of the time it was connected to 2 corny kegs in a fridge.

I am starting to wonder if CO2 tank will last either XX number of glasses dispensed, or 2 months of time, whichever comes first. I doubt this is normal for most people, but does anyone else have a problem with CO2 dissapearing after 2-3 months of not dispensing any beer?
I do- but I've found a few little leaks around the lid of one of my kegs, once the pressure got lower. It sealed fine when I gave it a shot of co2 at 30 psi, but afterwards it seemed like my co2 disappeared way too fast and I checked again and the lid had a very small leak around it. It drove me crazy!
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Old 07-07-2009, 01:40 PM   #3
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I am starting to wonder if CO2 tank will last either XX number of glasses dispensed, or 2 months of time, whichever comes first. I doubt this is normal for most people, but does anyone else have a problem with CO2 dissapearing after 2-3 months of not dispensing any beer?
I've got a small leak in my setup. I know what part of the system it is, between the regulator and the T-connector which splits the gas between the kegger and the conditioning cabinet, but like yours it's too small to find. I suspect one of the gauge bodies, but even immersing the whole rig doesn't show anything. So, I'm resigned to pressurizing the system and shutting the isolation valves. Fortunately, I can force carbonate using my other regulator and bottle.
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Old 07-07-2009, 02:00 PM   #4
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I am starting to wonder if CO2 tank will last either XX number of glasses dispensed, or 2 months of time, whichever comes first. I doubt this is normal for most people, but does anyone else have a problem with CO2 dissapearing after 2-3 months of not dispensing any beer?
It won't empty by just sitting there. I have a tank from my grandpa that he's had for years (more than 10). It still has plenty of Co2 in it.

Normally when I hook up a corny I'll spray the lid/relief valve with star-san to check for leaks. I'll also stored my cleaned kegs with some star-san and a bit of pressure (2-3 lbs) and if they have pressure when I pull them out to fill them I know they'll be good. If not then I know I may need to mess with them a little to get a good seal. You may also want to spray star-san on all the connections between your tank and kegs. If that doesn't spot your leak you can get actual leak-testing stuff for gas lines, that should do it (I've never had to go buy that stuff though).
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Old 07-07-2009, 03:00 PM   #5
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Did you actually submerge your regulator?

To find leaks, I use dishsoap mixed with water and spray it on the connections. Same idea as the star-san idea above. And just to weed out the easy stuff, you do have that plastic washer between the tank and regulator, right?

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Old 07-07-2009, 03:24 PM   #6
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Mine did the same thing this weekend. Happened once before. I've done the star san thing before and could not find any leaks. Frustrating...

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Old 07-07-2009, 03:48 PM   #7
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I'll also stored my cleaned kegs with some star-san and a bit of pressure (2-3 lbs) and if they have pressure when I pull them out to fill them I know they'll be good.
+1 on that!!!
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Old 07-07-2009, 03:56 PM   #8
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Upon inspection, the black part on a few popets looked almost crushed on one side, so I replaced the popets and hope that fixes my leak that I can't find. Has anyone found that to be the source of their leaks?

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Old 07-07-2009, 03:58 PM   #9
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a popet valve will only be a leak issue if the QD is disconnected. I have one keg that leaks from the gas in popet, but as long as I keep it hooked up, it is a nonissue. Same with having a beverage line connected to the liquid out.

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Old 07-07-2009, 04:02 PM   #10
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a popet valve will only be a leak issue if the QD is disconnected. I have one keg that leaks from the gas in popet, but as long as I keep it hooked up, it is a nonissue. Same with having a beverage line connected to the liquid out.
I think that's my problem - I have 6 kegs in the keezer and only 4 taps and 4 gas connects, so they get disconnected and moved around occassionaly.

If you have the gas connected but manifold shut off, will it still prevent it from leaking there?
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