C02 leaking from gas connector??

[HomeDrewBrew]

Hey all
So i went through almost a 5lb tank of c02 from a leak on a bad relief valve,swapped the valve out. soap tested after, Bang everything is all gd.2 weeks goes by and im noticing my gauge is slowly descending almost all the way empty.
So i soaped again.
All the poppets had already been replaced with new seals.
And both the kegs hold pressure when not connected to bev tap and gas connectors.
So after lots of soaping and diagnosing when ever i connect the gas connectors it leaks from bottom and the circle part whenever i turn a little.
Now i tried mine and my neighbors gas lines/connectors and he said he wasnt having any leaks on his..

So my kegs hold pressure when nothings connected but lose when gas is!!
Could it be a bad poppet on both??
Thanks

 

[ScrapRoomBrewer]

I had a similar problem. I replaced the o-rings at the top of the gas post, liberally applied some keg lube, and the problem was solved.

 

[Bellybuster]

yup, been there. the o-ring on the post itself as ScrapRoom Brewers says.

 

[unviewtiful]

If you're replacing the post O-rings, I'd suggest getting the red silicone ones for the gas side because they're softer at cold temps which helps ensure a better seal. Also an easy visual cue as to which post is which.

I definitely second the keg lube.

 

[brewprint]

Yep I've had this happen. I could hear a spppp if I moved it. Changed the o-ring on the post and the problem was solved.

 

[HomeDrewBrew]

Ok.would vaseline work as lube?.lol.its all i have.
Thanks

 

[brewprint]

Ok.would vaseline work as lube?.lol.its all i have.
Thanks

Sure. I don't see why it wouldn't since it's about the same consistency.

 

[ScrapRoomBrewer]

As I recall, Vaseline eats rubber. No good. Better with KY!

 

[ScrapRoomBrewer]

Really though, silicone based lubricant will work, but actual keg lube is still my preferred.

 

[HomeDrewBrew]

Ok ill be giving this a try possibly tomorrow and will post back if it helps!
Thanks all for chiming in!.
Love this site.

 

[HomeDrewBrew]

So an update on the leak.
I lubed up the seals on the gas in posts and im still getting leaks when connectors are on.
But i do have another question what it could be.

If their are scratch marks on the gas posts from say uuumm well i dont know not using proper tools to take posts off?(Socket wrench!!) and using vice grips instead cause it's all i had close?!
Would that make them leak?

 

[FloppyKnockers]

So an update on the leak.
I lubed up the seals on the gas in posts and I'm still getting leaks when the connectors are on.
I do have another question about what it could be.

If there are scratch marks on the gas posts from say, uuumm, well, I don't know... not using the proper tools to take posts off and using vice grips instead because it's all I had close.
Would that make them leak?

That could be the culprit, but not my first thought. If you know your leak is coming from the post and you're fairly certain that it's not the post seals or springs, I would check, lube, or replace the dip tube o-rings.

 

[ScrapRoomBrewer]

How chewed up are the posts? What lube did you end up using? Can you explain again how you tested with the neighbor's gear?

 

[ScrapRoomBrewer]

And you never said you changed the O Ring. Correct to assume you did?

 

[HomeDrewBrew]

You may be able to see the two scratch marks the vice grips left on the lip where it seals in the connector.Also the bottom is scratched.

View attachment 1450566276946.jpg

View attachment 1450566291803.jpg

 

[ScrapRoomBrewer]

Not 100% on this, but I'd bet the gasket would still seal despite that scratch. Unless the scratch continues inside where the gasket sits..... Hmm. Nice and smooth in the gasket groove?

 

[HomeDrewBrew]

I thought scratch and dents like this wouldnt let it seat properly and leaks would appear.

View attachment 1450570853392.jpg

 

[ScrapRoomBrewer]

If the scratches at the bottom were the problem, it wouldn't hold pressure when it was disconnected. (I think)

 

[HomeDrewBrew]

If the scratches at the bottom were the problem, it wouldn't hold pressure when it was disconnected. (I think)

Why wouldnt it hold if it was disconnected?!.
If the poppet holds and does its job and the only time i notice it leak is when i hook it up then it must be because of the dents on bottom.

 

[dobes]

Had one that was doing very similar thing. Changed several O-rings used the keg lube, didn't help.
Ended up getting a new gas connector and the problem stopped.

 

[HomeDrewBrew]

Hhmmm..well ive tried 3 Different gas connectors as well and it leaks with all them.Thats why im leaning toward the posts.

 

[HomeDrewBrew]

So i got my co2 refilled and beer racked into keg,i hit it with 30psi then shut the gas off,disconnected gas line and stuck in fridge.
Now the reason i did this is cause.
1.Im still paranoid about losing another tank full of co2,even though the keg is airtight my gas line leaks a tiny bit when connected.
2.And the manifold i just ordered leaks too!.

So how much of the 30psi co2 will it absorb and should i hit it again in a day or two?

Thanks