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Leaking keg: gas pipe wont seal

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mr_wibble

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So I had this leaking keg.

Gas was coming out underneath the gas post.
I pulled out the pipe, replaced the o-ring, re-lubed, put it back together ... still leaking.

I tried a new post ... still leaking.

I swapped the gas pipe in from another keg. Leak stops.

Thus, it must have been the gas pipe causing the leak.
(It wasn't a minor leak, the soapy water made lots of bubbles.)

But I can't see anything at all wrong with this gas post!

gas_pipe1.jpg gas_pipe2.jpg gas_pipe3.jpg

Has anyone had this before? Any ideas?
Should I replace it?
 

brewgasm

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More likely to be the post but if there's anything wrong with the tube it would be the lip. Also take a look at the bulkhead on the keg :)
 

MHB

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Get a replacement for the O-Ring, it seals inside against the short diptube, and on the outside against the internal of the keg post.
Rolling it down and taking a couple of turns of PTFE plumbing tape around the dip tube then rolling the O-Ring back up over the Teflon tape. use a little lube and reassemble.
Not as good a fix as replacing the O-Ring but it will get you out of trouble.
Mark
 

S.E

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I swapped the gas pipe in from another keg. Leak stops.
Did you change/replace the o ring on this gas pipe when you took it from from the other keg ?

If not it could be the original o ring started leaking on the other pipe and the one you replaced it with was either faulty or too small/thin.

Try using the o ring from the gas pipe that didn't leak on the pipe that did and see what happens.

Edit: What I mean is I think the new o rings you are using may not be the right size. Try using the o ring from the gas pipe that didn't leak on the pipe that did to see if it seals.
 
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S.E

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Or try putting two o rings on the gas pipe that leaked and see if that seals it.
 

mr_wibble

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Thanks for the replies.

The o-ring is new-ish, it could even be new from the packet.
I will try a couple of the suggestions and follow-up.
(maybe it's just that o-ring)

As far as I know the o-rings are the correct size. They are all working fine in the other kegs - after finding this leak I went over every connection in the system with the soapy-sprayer.

cheers,
-kt
 

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