Home Brew Forums > Home Brewing Beer > DIY Projects > Kettles, Mash Tuns, & Hot Liquor Tanks > The Baby-Bottle-Nipple MLT Gasket Method w/pics
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Old 02-09-2012, 06:19 PM   #1
tre9er
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Default The Baby-Bottle-Nipple MLT Gasket Method w/pics

So I had a 22qt. cooler sitting around that we sometimes use for camping, a day at the lake, etc. It's really too small to bring much though, so I figured, why not make a mash-tun?!?

Like most/many people I ordered the bulkhead kit form bargainfittings.com, all very high quality stuff I might add. However my cooler didn't originally have a spigot, so there was no pre-existing rubber gasket, and the walls had a lot of flex between them.

I read, and I read, and I tried this and that...I coated the threads with ptfe tape, I assembled the parts every which way...it kept leaking (underneath the nipple between the cooler wall and nipple, which meant liquid in the insulation).

I saw where a few people had used baby bottle nipples for a gasket on the inner wall of the cooler. Finally last night I picked up a two pack. These are the smaller nipples, not the huge 3" jobbies.

Here is an illustration of where I cut the nipple and then a few pics of the assembly. I can happily report no leaks!
The little flange left by cutting the nipple this way actually seats it in the SS washer. I'm using 1/2" hardware, too, FYI.

The PVC goes between the two cooler walls. You make the outer wall hole slightly larger. It's a 1/2" PVC union, actually, but I'm told 3/4" PVC works too. So from outside to inside the assembly goes:
Ball valve, SS washer, PVC/Union,inner cooler wall, baby-bottle-nipple gasket, ss washer, locknut.


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Originally Posted by davekippen View Post
Open log Fermenting and gas-can secondary?? I am planning my next brew right now!!

Reason: Adding more info/images
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Old 02-09-2012, 06:26 PM   #2
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That's a cool idea! Thanks for the info.


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Old 02-09-2012, 06:45 PM   #3
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I've got nipple gaskets on HLT, MLT, and Keggle. No leaks, and they work extremely well. Plus it was so much cheaper to make my own than to buy a weldless fitting. But it did take some experimentation to get to the solid, no-leaking version.
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Old 02-09-2012, 07:09 PM   #4
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Quote:
Originally Posted by mrpeccator View Post
I've got nipple gaskets...
Whoa, whoa...TMI, TMI!
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Open log Fermenting and gas-can secondary?? I am planning my next brew right now!!
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Old 02-09-2012, 07:20 PM   #5
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sweet, 3rd and final kid is finally off bottles, I am re-purpose a few of these before I trash em.
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Old 02-09-2012, 09:56 PM   #6
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Quote:
Originally Posted by Biohazard View Post
sweet, 3rd and final kid is finally off bottles, I am re-purpose a few of these before I trash em.
Keep them indefinitely! They're 100% silicone and thus food-grade and high-temp (boiling+) safe!
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Open log Fermenting and gas-can secondary?? I am planning my next brew right now!!
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Old 02-10-2012, 01:16 AM   #7
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Awesome! I wish I had thought of this sooner. I've got a whole grocery bag full of baby bottle stuff that we just haven't gotten around to throwing out yet. Time to raid the nipples...
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Old 02-10-2012, 03:21 PM   #8
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Now if you could just find some way to use that old breast pump for brewing, you'll be all set!
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Old 02-10-2012, 03:25 PM   #9
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Now if you could just find some way to use that old breast pump for brewing, you'll be all set!
SUUPPPERRR Slow pump for single-tier system? Nah, probably get fried by the heat. Breastmilk slightly cooler than wort
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Old 02-10-2012, 03:31 PM   #10
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Holy crap this is a good idea, not to mention throwing around 'breast' and 'nipple'.


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