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Old 01-30-2012, 03:54 AM   #1
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Default My 150 qt mash tun build

I am up-scaling my brew rig to make 25 gallon batches, that means that I needed to replace my old 48 qt tun with a 150 qt tun. Here is the result.

I started with this marine cooler that I received as a safety award years ago.


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Old 01-30-2012, 03:57 AM   #2
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Then I installed a drain system made from 1/2 in hot water pvc. None of the joints are glued and each of the lines has holes drilled one inch apart down the length of the pipe.


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Old 01-30-2012, 03:59 AM   #3
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The drip distribution system looks something like this. I will upload a pic of it soon.
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Old 11-07-2013, 03:13 PM   #4
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what is your efficiency on this setup?
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Old 08-12-2014, 02:35 AM   #5
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I have since upgraded to a HERMS and never tested the efficiency but it always made GREAT beer!
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My trash heap fridge rescue and conversion to a first class fermentation chamber

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Old 02-22-2015, 05:22 PM   #6
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Default I building same thing

I am getting ready to build w the exact same cooler. I was wondering about heat absorbtion. In my 48 quart, I used 180 deg. H2O to get 152 deg mash. How was it for you? Any suggestions or problems I might have? Anything you didn't like about it? Also, I've always used one single drip arm, and I like your drip system, but was wondering if it actually dripped out all the holes? Anyways, I'd really appreciate your feedback. Thanks.......
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Old 02-24-2015, 12:35 AM   #7
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I would lose about 18-20 def F if I just dump on the grains but if you warm it up with a gallon of boiling water, you can use 165 deg f to mash in at 150-152 deg F. As for the drip system, it worked well if you move your water through a 1/2 in hose and keep everything level. I haven't used this setup for a couple of years since I upgraded to a 1 bbl electric but I always had good results with it and it was pretty cheap to build since I already had the cooler.
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Old 02-24-2015, 04:23 AM   #8
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Quote:
Originally Posted by dcarter View Post
I would lose about 18-20 def F if I just dump on the grains but if you warm it up with a gallon of boiling water, you can use 165 deg f to mash in at 150-152 deg F. As for the drip system, it worked well if you move your water through a 1/2 in hose and keep everything level. I haven't used this setup for a couple of years since I upgraded to a 1 bbl electric but I always had good results with it and it was pretty cheap to build since I already had the cooler.

Thanks man I'm going to give it a go. Got the cooler at SAMs club for $70. Right now I'm doing two back to back mashes to get 28 gallon pre boil doing fly sparge. I figure doing the mash all at once will shave about 3 hrs off my brew day. Thanks for the input, and for now I think the cooler mash will work for for me. Thanks again for the reply.
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Old 02-24-2015, 04:26 AM   #9
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Thanks man I'm going to give it a go. Got the cooler at SAMs club for $70. Right now I'm doing two back to back mashes to get 28 gallon pre boil doing fly sparge. I figure doing the mash all at once will shave about 3 hrs off my brew day. Thanks for the input, and for now I think the cooler mash will work for for me. Thanks again for the reply.
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Old 02-24-2015, 04:28 AM   #10
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Quote:
Originally Posted by SMITHN8R View Post
Thanks man I'm going to give it a go. Got the cooler at SAMs club for $70. Right now I'm doing two back to back mashes to get 28 gallon pre boil doing fly sparge. I figure doing the mash all at once will shave about 3 hrs off my brew day. Thanks for the input, and for now I think the cooler mash will work for for me. Thanks again for the reply.

Wow, not sure how I double replied, drinkin too much " Old Haggard Ale" clocking in at 8.2%.......


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