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Old 05-11-2012, 04:52 PM   #1
junior
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Default Mash Tun Manifold Suggestions

Hi to all that are viewing this post. I decided to make a manifold for my mash tun because I wanted something more sturdy than my stainless steel braid that is from a faucet connector. When I did a trial run with the new manifold I was disappointed with the amount of water left on the bottom of the tun. The amount of water was a little over 1qt, when I tested the braid is was under .5qt, any suggestions on what I did wrong with the design of the manifold?
Edit: I just did another test with the manifold, and this time I tilted the mash tun back and forth and got another .5qt, so the end result is manifold left 1qt, braid left .5qt.


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Old 05-11-2012, 05:47 PM   #2
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I have two comments.
If you use plenty of sparge water, the left over wort will not be a problem. Whatever's left should be pretty weak anyway, if you sparge a good pre-boil volume.
The size of your manifold is a concern since it's touching the sides of the tun. For best efficiency, you may want to cut down the straight pieces so that the rectangle is about 1-2 inches from the side of the tun, all he way around. Otherwise, you might get channeling around the perimeter of the tun, where the fluid tries to go around the mash, and not rinse it properly.
Other than that, it looks good.



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Old 05-11-2012, 06:09 PM   #3
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Quote:
Originally Posted by horseinmay View Post
I have two comments.
If you use plenty of sparge water, the left over wort will not be a problem. Whatever's left should be pretty weak anyway, if you sparge a good pre-boil volume.
The size of your manifold is a concern since it's touching the sides of the tun. For best efficiency, you may want to cut down the straight pieces so that the rectangle is about 1-2 inches from the side of the tun, all he way around. Otherwise, you might get channeling around the perimeter of the tun, where the fluid tries to go around the mash, and not rinse it properly.
Other than that, it looks good.
+1


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Old 05-12-2012, 12:14 AM   #4
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Quote:
Originally Posted by horseinmay View Post
I have two comments.
If you use plenty of sparge water, the left over wort will not be a problem. Whatever's left should be pretty weak anyway, if you sparge a good pre-boil volume.
The size of your manifold is a concern since it's touching the sides of the tun. For best efficiency, you may want to cut down the straight pieces so that the rectangle is about 1-2 inches from the side of the tun, all he way around. Otherwise, you might get channeling around the perimeter of the tun, where the fluid tries to go around the mash, and not rinse it properly.
Other than that, it looks good.
Horse, thank's for the advice, will make more clarence to the sides of the mash tun.
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Old 05-12-2012, 12:15 AM   #5
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Quote:
Originally Posted by cpatel479 View Post
Cpatel, thank's for the link.
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Old 05-12-2012, 04:05 AM   #6
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Does the size of the copper for the manifold really make a difference?
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Old 05-12-2012, 07:04 PM   #7
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Horse, what do you think about this adjustment? I shortened the width, do you think I should shorten the length?
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Old 05-12-2012, 08:07 PM   #8
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if you batch sparge the size of the manifold does not matter. Only fly sparging do you need to be worried about channeling
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Old 05-13-2012, 12:25 AM   #9
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Quote:
Originally Posted by ekjohns View Post
if you batch sparge the size of the manifold does not matter. Only fly sparging do you need to be worried about channeling
Ek, thank's for that information, I batch sparge, so I wish I had this information before I modified my equipment.
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Old 05-13-2012, 02:48 AM   #10
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Don't sweat the modification the amount that you did will be insignificant. The about of liquid you have remaining is likely do to how high the slits were cut but 1qt is nothing compared to the 6-7 gallons (26 or qts) you already collected. Do you leave 1 qt of water when testing or with grain?


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