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Old 12-15-2008, 11:09 PM   #1
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Default MLT Manifold?? Help me!

So currently my plan is to make a CPVC manifold for my MLT, but have a multitude of questions/concerns. Any of you who can help me, I will greatly appreciate all your comments!!

First of all, if I were to continue with my plastic manifold, what size tube do I use? If i go ahead with a plastic tube manifold, what size holes do I drill in it, and where and in what pattern? My thoughts at the moment are 3/16 with at least 3 rows offset by 1/2 inch each.


Now, If I were to go with copper, why would it be worth doing so, and where/how would I do the holes? Ive heard of drilling and sawing the copper though sawing is much more common.


Anyways, I am completely lost and could use any advice you guys have!!

Cheers


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Old 12-15-2008, 11:22 PM   #2
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I used copper and a dremel tool to cut slits.


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Old 12-15-2008, 11:43 PM   #3
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I used the PVC in 1/2 diameter. I drilled 1/8 holes as evenly as I could all over the bottom of all the tubes and fittings.

Main reason for me is that the PVC is only a fraction the cost of the copper. You could build and test 5 different PVC designs for the cost of one copper design. Ultimately I think the copper might be better but I can't think of an actual reason why.

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Old 12-15-2008, 11:47 PM   #4
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I used copper, but CPVC is fine.

As far as a cutting design, I used a hack saw and cut as many slits as I could

Never a stuck sparge and pretty consistent (75-78%) efficiency.

Make sure the holes/slits are on the underneath or it will clog for sure.

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Old 12-15-2008, 11:52 PM   #5
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Quote:
Originally Posted by BierMuncher View Post
I used copper, but CPVC is fine.

As far as a cutting design, I used a hack saw and cut as many slits as I could

Never a stuck sparge and pretty consistent (75-78%) efficiency.

Make sure the holes/slits are on the underneath or it will clog for sure.

Attachment 8831

Could you do a hacksaw with the CPVC? And is it ok to have the drain pipe up above the mani like that? Do you start a siphon, then use the valve to turn off and on from there? Finally do the slits have to be on the bottom 1/2 or bottom 1/4? is there a general rule??

Thanks for your help guys, keep the feedback coming!
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Old 12-16-2008, 02:11 PM   #6
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the only positive I can think of with copper over cpvc is that cpvc can float if you get air into it.

you can use anything on cpvc: hacksaw, dremmel, file, drill

You can run the pipe over the manifold like that, the only drawback being you may bang it around while stirring.
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Old 12-16-2008, 03:34 PM   #7
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I used a jig saw and a jig to cut slits in my copper manifold.



I also set it up so the drain line was underneath the manifold in order to minimize dead space in my MLT

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My Super Efficient 5-Gallon Mash Lauter TunGraduating CarboysLeaf Hop Absorption Measured
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Old 12-16-2008, 05:19 PM   #8
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ChemE I really like your design, what cooler and diameter of pipe are you using?
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Old 12-16-2008, 05:42 PM   #9
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oh, and if you use copper, don't solder it together. Don't glue cpvc. You will like being able to break it down into parts and soak it and then scrub it with a pipe cleaning brush. It's so much easier!
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Old 12-16-2008, 06:15 PM   #10
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ChemE I really like your design, what cooler and diameter of pipe are you using?
Thanks! All the details are here:

My Super-Efficiency 5 Gallon Mash Lauter Tun

Except maybe the copper diameter. It is 1/2" pipe.


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