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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > New cooler tun question
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Old 08-22-2008, 01:42 PM   #1
Yin_Yang
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Default New cooler tun question

i posted these two questions on the cooler diy post, but i dont think many people check that area often, and i really wanna know what to do, so i'm posting it here:

well i tried this w/ my rectangle 58 quart. first, the ball valve, actually ends up w/ part of it inside the cooler, because the nipple seems too short for my cooler. I drip tested it, and it leaked, since i had no room for a washer in between the rubber gasket and the barb adaptor, so there wasnt enough of a seal. I managed to squeeze a washer in there, but it of course made the ball valve go deeper in the cooler...but now no drip.. i mean its functional as it is, and i can work the valve..but should i get a longer nipple?

Also, they didnt have stainless steel fender washers, only zinc coated..is that ok and safe to use?



**************

well here it is, after a 45 min. leak test, and no leaks..so should i keep it as is, or get a longer nipple?



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Old 08-22-2008, 01:54 PM   #2
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The design is fine, but the Zink will corrode after the 1st batch. You really DO need the SS washers.

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Old 08-22-2008, 02:00 PM   #3
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ya i figured...it shocked me that home depot didnt have any..i may try lowes later.

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Old 08-22-2008, 02:05 PM   #4
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If you can't find SS, try brass.

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Old 08-22-2008, 02:35 PM   #5
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Crap on the zinc...I just built my cooler and I had to use zinc. Bah

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Old 08-22-2008, 02:41 PM   #6
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Fastenal has everything you need in SS, every size.

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Old 08-22-2008, 03:39 PM   #7
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Don't know if this will work for you, but I made a larger hole in the outer wall of my Rubbermaid MLT and cleared out the insulation so that the inner wall was exposed. This way the nut, washer and gasket can be tightened without distorting and compressing the two walls together.
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Old 08-22-2008, 03:52 PM   #8
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Another way to do what Anoldur suggested is to cut a piece of pvc pipe (with an ID a tiny bit larger than your nipple OD) to the length that the cooler wall is thick. Slit it long ways to insert into the hole. It will provide rigidity so you can tighten enough for the gaskets to compress.

No to zinc and get a nipple long enough to support putting a washer on the outside. Nothing seems to be holding your assembly from creeping further into the foam and once it heats/cools a few times, you'll get leaks. There's nothing like a quickly developing leak in the middle of your mash.

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Old 08-22-2008, 08:32 PM   #9
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ok i went to lowes, and i got a 2/12 inch nipple instead, and a few more washers, and now it looks a lot better. im leak testing it now, and nothing so far. im forced to put up w/ the steel/zinc alloy until i can find ss...even lowes didnt have brass or ss in the 5/8" washers, so im still looking..

what is the worst that can technically happen? is it safe to use w/ the beer at least a couple times, or is it a question of toxicity? is it just corrosion that i have to worry about? if so i have a few extra washers to use to swap them out as needed, until i can find a ss or brass one.

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Old 08-22-2008, 11:23 PM   #10
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You can use nylon washers too. I've had success finding those. They'll hold up to mash temps.

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