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Old 03-25-2013, 04:40 AM   #1
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Default Keg only holds pressure above 15-20 psi

I have one pin lock keg. That does not like to hold pressure if I keep co2 line off , unless its higher pressure. Because I would like to carb a keg then store at room temp at a lower pressure. So would that just be the poppets ? And if so will the universal poppets work for my pin lock ?

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Old 03-25-2013, 10:30 AM   #2
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Where is it leaking? Why do you assume it's the poppets? I'd pressurize the keg then dunk it in a tub or something to see exactly where it's leaking. In most cases, leaking at lower pressures is around the lid. Keg lube on the lid o-ring should help a lot, if it's beat up you can put a new one on there.

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Old 03-25-2013, 09:44 PM   #3
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Originally Posted by Creepersale View Post
I have one pin lock keg. That does not like to hold pressure if I keep co2 line off So would that just be the poppets ? And if so will the universal poppets work for my pin lock ?
Yes, that would indicate a leaking poppet, I have ballocks and have no problems with the universal ones. I keep a half dozen on hand for Justin Case.
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Old 03-25-2013, 10:22 PM   #4
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I agree, definitely a poppet. And it could be either poppet if the testing was done with an empty keg. Do a soap bubble test to verify which (or both) is leaking.

Some pin lock kegs should work fine with a universal poppet. Check the kegconnection site for pin lock poppet styles to see what you might be able to use...

Cheers!

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Old 03-25-2013, 10:31 PM   #5
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Ah I didn't read closely enough. Still, I think it's worth verifying that it's the poppet. It could be that you just aren't noticing the leak (if it's very slow) while the gas is connected.

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Old 03-25-2013, 11:05 PM   #6
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Hit it with 30psi and see if it leaks still more pressure the better the seal

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Old 03-25-2013, 11:53 PM   #7
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It's very simple. Charge the keg and remove the connectors. Spray with starsan. The leak will bubble.

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Old 03-26-2013, 02:44 PM   #8
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Thanks for some help , but here are some results. No bubbles with s-San @ 30 psi. At 8-10 psi , it seemed I'm getting an ultra slow leak from lid which did have keg lube on o- ring. So I have noticed the lid on this keg is weaker when locking down. Is there anything I can do to make the lock down stiffer ? Or buy new lid ?

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Old 03-26-2013, 02:48 PM   #9
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By the way it makes sense to me that it doesn't leak at 30 psi if it forcing it closed. But at lower pressure the lid lock doesn't have enough balls to suck it up. Lol if that makes sense to anybody else. Hopefully I can just bend the feet in some way to make it tighter.

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Old 03-26-2013, 03:05 PM   #10
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You can try shoving a coin under the feet. You can also buy a thicker, oversized silicone o-ring for the lid.

http://www.homebrewtalk.com/f11/mcmaster-keg-o-ring-list-233086/

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