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Old 06-29-2012, 08:43 PM   #1
jstewartgt
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Default Mash Tun Recirculation and stuck sparge

For a second batch in a row I've had a stuck batch sparge. I know it's related to recirculating the wort using my pump, but I cut the flow way down.

I'm currently using a 3/4" braid and it seems like it may have been crushed and just isn't letting the wort flow. Has anyone else had any issues like this? I figure I'll build a cpvc manifold to avoid the crush, but I'm also thinking maybe may crush is too fine and causing the grain bed to become too compacted.

Thanks!

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Old 06-30-2012, 03:36 AM   #2
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I also use a 3/4" braid and haven't had a stuck mash since converting to that. Sounds like your crush may be too fine; post a pic of your crush.

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Old 06-30-2012, 03:39 AM   #3
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But I'll also offer this alternate advice - I use a CPVC manifold and have never had a stuck mash related to lautering method...

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Old 07-06-2012, 07:51 AM   #4
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Ive been having this problem. I think the braid needs to be replaced at some point. My crush is pretty fine, but i get a lot of intact hulls so I think it has more to do with the braid. It didnt happen when I first started using the braid.

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Old 07-06-2012, 10:12 AM   #5
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When I first built my mash tun (converted 5 gallon cooler) I used a braid. From time to time I experienced the "stuck sparge". Very frustrating. So I went to an all cooper manifold. Worked fine until one day it happened again. So my solution was to put a biab bag into the tun as a liner. This works great I have probably done 10 brews since then without issue.

good luck, Mike

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Old 07-06-2012, 01:25 PM   #6
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Are you sure the braid was stainless? I've seen a lot of people have that problem because there are a lot of stainless look alike braids that are actually some type of plastic now.

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Old 07-07-2012, 11:32 AM   #7
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My braid was stainless, but had warped due to the other stuck sparges.

As an update, I think I know what was happening in may case. After creating a cpvc manifold, it happened again. I believe what was happening is the piece of aluminum I was using to try and disperse the recirculation water was eventually sinking in the mash tun and sitting directly on the grain. I believe the surface area of that aluminum was creating a vacuum on the grain bed combined with the weight of the wort on top of it was compacting the grain bed to a point of no return.

Once I removed the aluminum, I didn't have any further issues.

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Old 07-07-2012, 12:10 PM   #8
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Glad to hear you got it fixed

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