King Keg leak.

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Perrin_Abara

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I think I’ve read/watched everything I can find about king kegs. I cannot for the life of me get mine to hold pressure. I’ve changed to squared o seal, tried the ptfe etc. Sprayed soapy to find the leak and it’s coming from the o ring.

I have noticed the cap does not look like it’s on straight. It could’ve been like that since purchase or maybe I’ve cross threaded it so I fear it could Be permanently damaged?
 

Buffers brewery

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Hi @Perrin_Abara can you get a picture of the cap on the barrel from the side?
You say the leak is from the O ring. Is that the one inside the S30 valve? Leaks on King Kegs in my experience are most likely from the rubber band pressure relief valve, the rubber band non-return valve under the cap or the rubber washer between the cap and S30 valve.
 

Perrin_Abara

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Hi @Perrin_Abara can you get a picture of the cap on the barrel from the side?
You say the leak is from the O ring. Is that the one inside the S30 valve? Leaks on King Kegs in my experience are most likely from the rubber band pressure relief valve, the rubber band non-return valve under the cap or the rubber washer between the cap and S30 valve.
 

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Perrin_Abara

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The lid looks wonky and it won’t go on any differently. it’s definitely the o ring I the lid where the air is coming from.
 

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Ooerr that lid is on the cock! Sorry for the obvious questions but, have you inspected the threads in both the cap and barrel neck for damage? There was a member on here a year or so ago that had a very loosely threaded lid that kept jumping on the cock (technical term) like yours.
As for the O ring leaking, this will only leak when your injecting gas from a cylinder or bulb. If there's a leak from the inlet hole, that will be the rubber band non-return valve on the underside of the lid. Inspect the rubber for splits and make sure it's seated properly on the stem by giving it a little twist.
 
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Perrin_Abara

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Ooerr that lid is in the cock! Sorry for the obvious questions but, have you inspected the threads in both the cap and barrel neck for damage? There was a member on here a year or so ago that had a very loosely threaded lid that kept jumping on the cock (technical term) like yours.
As for the O ring leaking, this will only leak when your injecting gas from a cylinder or bulb. If there's a leak from the inlet hole, that will be the rubber band non-return valve on the underside of the lid. Inspect the rubber for splits and make sure it's seated properly on the stem by giving it a little twist.
 

Perrin_Abara

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[/QUOTE I’m confident the leak isn’t coming from any of the S30 rubbers. I haven’t inspected any of the threads because I’m not sure what I’m looking for. I was hoping it’s was a dodgy lid rather than keg thread as there is beer in it.
 

Perrin_Abara

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Yes, in reference to jumping the cock, my lid seems to be doing it also. Should I, purchase a new lid or is it the barrel at fault?
 

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Just had a look at one of my King Kegs. The keg thread looks like this...
7EF9EF2F-B096-4DF8-9116-806F87213482.jpeg

..so you can see the barrel material has created a full thread form. It is possible that the thread form is incomplete or has shrunk after moulding producing a smaller neck. Measuring across the neck from the top of the threads the diameter of mine is 114mm.
Looking at the cap thread...
166F9900-8683-4DA1-9CA8-289F16A46C72.jpeg

..again you can see the thread form is nice and sharp indicating a full moulding. It is unlikely that the cap is too large IMO.

Sounds like you’ve got a faulty barrel to me. I assume this is the first time you’ve used this barrel?
 

Perrin_Abara

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It is my first time with this barrel. I’m gonna bottle this batch and liaise with brew2bottle for some potential remedies or a refund. Maybe if King Keg themselves could be arsed to carry out some quality control checks then less people would have issues. I’ve been reading a lot about manufacturers imperfections.
 

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Tell me about it! Although my problems were with the S30 valve. Good luck. Hope you get it sorted.
 

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I've got a KK with exactly the same problem mate. The lid screws on straight, then when you inject some CO2 the lid jumps up on one side. I tried a new cap, even removed 4mm off the keg neck, and then spent a few hours getting it lovely and smooth, and flat, but still jumped. The only way i got it to hold pressure was to tighten it up by hand only, and then it wasn't very reliable. Adding more PTFE tape didnt solve it. Adding another big cap O ring helped (so i've got a standard washer on top of a flat profile washer) I tend not to use the Keg anymore, just not worth the risk. Good for storing bits in.
 

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Ditto, my KK has the same issue, if I screw it on carefully I can eventually get to fit properly but most time it ends up wonky and not sealing.

I also don't use my KK any more, too many issue with them - sorry to be the bearer of bad news!
 

BridgeBrew

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Yeah its gotta be a QC issue, as i've got 3 KKs and this is the only one i have that problem with. I really dont know what the answer to this one is. I might have another look at it, and let you know how i get on. Mines not as wonky as Perrins, in fact its very subtle. You can just see it lift slightly when pressurized. Seems to hold below 4 psi, any higher and it WONKS !
 
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Perrin_Abara

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I've got a KK with exactly the same problem mate. The lid screws on straight, then when you inject some CO2 the lid jumps up on one side. I tried a new cap, even removed 4mm off the keg neck, and then spent a few hours getting it lovely and smooth, and flat, but still jumped. The only way i got it to hold pressure was to tighten it up by ha
16b0a603-0cb1-4e89-af80-2a9bc3f2ebf5.jpg
nd only, and then it wasn't very reliable. Adding more PTFE tape didnt solve it. Adding another big cap O ring helped (so i've got a standard washer on top of a flat profile washer) I tend not to use the Keg anymore, just not worth the risk. Good for storing bits in.
There is a gentlemen on here who has engineered a contraption and had a couple for sale. Hopefully this will sort it out. I do eventually want to move on to the corny kegs
 
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