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Old 03-16-2013, 03:15 PM   #1
Shred
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This is my first time attempting a blow-off of this type. I've done large blow-offs from carboys, but never attached a 5/16 hose to a 3-piece air lock.

I pitched this beer last night. A 6 gallon batch. With such little head space, I figured better safe than sorry. The hose is going down into a vase half filled with Starsan.

I checked on it this morning and it didn't seem to be blowing bubbles in the Starsan, but the lid was all swollen. With light pressure I relieved the swelling and the vase bubbled like crazy.

Is there any reason to think this blow-off configuration is inadequate? Is the lid going to pop off and ruin my beer (and floors)?



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Old 03-16-2013, 03:54 PM   #2
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You didn't mention it so I'm assuming after relieving some pressure the bubbles didnt continue in the vase? Are you sure its not leaking where its connected at the airlock?


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Old 03-16-2013, 04:02 PM   #3
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I didn't see any bubbling in the vase after I stopped applying pressure. I don't think there's a leak. It's in there pretty good, plus if it was leaking, would the lid swell? The whole thing seems to defy what little physics knowledge I have.
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Old 03-16-2013, 04:04 PM   #4
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I'm thinking maybe I should pull that bung out and put a 3-piece in there in addition to the blow off.
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Old 03-16-2013, 04:04 PM   #5
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Sounds to me like the airlock stem got plugged. you releived it when pressing on the lid. Try cutting off the "X" tapered part of the airlock stem off. some say this helps releive the problem. Might try it with the dremel myself.
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Old 03-16-2013, 04:07 PM   #6
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Some of my airlocks are not wide open on the inlet - they have 4 small holes instead of a single big one. Those can get blocked by krausen blow. I just remove the airlock and insert the flex hose in the lid grommet.

The lid should not be showing pressure. It is likely clogging.

 
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Old 03-16-2013, 04:09 PM   #7
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That airlock actually didn't have an "x". I checked for that before I installed it. Also, looking down into it, it seems clear. I just popped a 3-piece in where that bung was. If the 2 don't relieve the pressure I'll be totally confused.
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Old 03-16-2013, 04:13 PM   #8
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Dual airlocks? Yeah, that's how I roll.

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Old 03-16-2013, 04:35 PM   #9
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Quote:
Originally Posted by Shred
Dual airlocks? Yeah, that's how I roll.
Is it working now lol?
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Old 03-16-2013, 04:43 PM   #10
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I would expect that if you have a blow off the three piece airlock is likely to at least fill or maybe overflow. I would check the blow off assembly by pulling it out and blowing through it. If there is no resistance it should be ok without the second airlock.



 
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