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Old 05-14-2011, 06:38 PM   #1
d_ozz68
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Default Is any amount of Co2 leak acceptable?

Hi all....

I have a secondary regulator that is screwed in directly to a 6 way manifold that appears to have a very slow leak. I hit it with 30psi and then turned the gas off and the pressure has now dropped to 28psi after about 2 hours. I have the manifold submerged in water and have not seen a single air bubble.

My question is, does anyone know if this amount of loss is acceptable or do I need to keep hunting for the leak and maybe consider that I might have a bad regulator?

Also, I don't know if this will change anything however when I plan on using this manifold the Co2 coming in will be at 30psi (because of my keg of root beer) but I will have the regulator on the manifold set at around 8-10 psi for dispensing my beer so maybe the leak will be slower.?.?

Any comments/advice will be greatly appreciated!! Thanks!!

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Old 05-14-2011, 07:04 PM   #2
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Find & fix the leak. Even a slow leak will drain your tank quickly. The leak may well be in the regulator of its connections. Submerge everything you can. I even submerged my entire regulator (up to the gauge stems) searching for a leak. This seems to have done no harm and it was a long time ago. You will be surprised at how quickly even a slow leak can drain a CO2 cylinder.

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Old 05-14-2011, 08:09 PM   #3
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Thanks Catt22, that was the answer I was expecting but I hoping that I would get "don't worry, you will never notice a leak that small"

I've had it submerged as much as possible for most of the day and I have tightened every fitting and I just can't seem to find any leak

I have a wheat that is almost ready to keg and I guess if I can't get this manifold figured out I may have to break down and buy a new secondary or a dual body primary........Does anyone have a good working one they want to sell?

Thanks again Catt22

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Old 05-14-2011, 08:26 PM   #4
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I think nearly everyone with a kegerator eventually gets burned by a small leak... sucks to think everything is cool one day, then come home to an empty CO2 tank the next. Definitely locate that leak or you'll be filling up CO2 every other day.

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Old 05-14-2011, 09:57 PM   #5
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Is the regulator connected to a keg? could be a connector valve
try hooking it up pressurize and check for pressure loss again if you didnt already
aah crap didnt notice that it was a 6 point one

Does it have ball valves or quick connect?

hopefully last edit Can you blind off the valves and test separately/if quick connect it may be dust one one of the balls, bleed off a little with a non sharp tool(need some pressure for that)

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Old 05-15-2011, 12:29 AM   #6
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Here is a picture of the manifold in question. I had it submerged up to where the regulator attaches and couldn't find any leaks. My Co2 tank is inside my keezer, so I used about 8 feet of extra vinyl tubing I had laying around so I could submerge it outside the keezer so that I could keep an eye on it. What is adding to my confusion is, when it was sitting out at room temp. I lost about 2 psi in 2 1/2 hours but when I took it out of the water and just set it in my keezer it dropped from 30 psi to 20 psi in about 20 minutes.

I'm beginning to think the diaphragm inside the regulator might not be sealing well and it gets worse when it's cold?? Thanks for all the advice/info so far.

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Old 05-16-2011, 10:46 PM   #7
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question: did you set it at 30psi, put it in the kegerator, and it dropped 2psi afterwards?
if so is it still holding at 28psi?

because, chilling it down will lower the pressure, but only a finite amount. If it was 30psi at 70F and 28psi when it cooled to 44psi, and holding 28psi for several days now... I see no leak, just gas pressure dynamics.

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Old 05-17-2011, 03:15 AM   #8
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I had it set at 30 psi at room temp for a couple of hours and it dropped on average 1psi per hour all the way down to around 25 psi then I stopped the "experiment", assuming that it would have continued all the way to zero psi eventually.

Then I tried the same experiment inside my keezer resetting it to 30 psi and then it only took about an hour for it to drop all the way down to zero.

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Old 05-17-2011, 03:21 AM   #9
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Get real hose clamps, for starters. So it is hook from tank, to tubing, to reg? I don't think thte clear tubing pictured is designed to handle 800 psi...

Also, on the tank, do you have a nylon/fiber washer? They need to be replaced every fill.

Dunk the whole thing in water. Tank, reg, and all. Just keep the gauge above. It'll be fine.

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Old 06-24-2011, 05:31 PM   #10
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I also recently developed a leak somewhere. Been through 2 tanks in 1 month. I submerged the entire top of the tank, regulator and disconnects and have found nothing. Of course stupid me submerged the gauges too and now I believe I royally screwed up my regulator as it no longer regulates. I check the keg lid every time I fill it so I really have no idea whats wrong.

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