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Old 06-23-2009, 03:11 PM   #1
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Default Ten minute DIY cooler mash tun conversion

Very simple, cheap and effective batch sparger! 48 quart coleman on its way to the landfill gets a second life.
Slightly oversized tubing is inserted through cooler drain hole, For lautering, I used a washing machine supply
hose braid, it seems a bit heavier and more substantial than the sink / toilet supply braids. Zip tie secures the braid.
12 gauge copper wire is used to hook the tubing above the wort level to control flow...down is on, and up above the wort level in the cooler is off, a caveman could do it.







No valve, no washers, no teflon tape, no leaks, stripped down to the bare essentials!


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Old 06-23-2009, 03:25 PM   #2
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You still need something on/off to control the flow. How are you doing this, or did I miss something in the above pictures?

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Old 06-23-2009, 03:33 PM   #3
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You still need something on/off to control the flow. How are you doing this, or did I miss something in the above pictures?
Gravity, raising the outflow tube is off, lowering the tube is on. Place the tube into a pitcher and lower slowly to vorlaugh over kettle, when pitcher is almost full, move hose end to bottom of kettle. Or one can just fold the hose and kink it for the off function. Or, once the hose is warm and soft, pinching it b/w your fingers makes a pretty good valve.

Sounds difficult perhaps, but it is very easy.
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Old 06-23-2009, 03:34 PM   #4
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Flow is probably controlled by height of tubing. I like it except for the use of vinyl tubing. Vinyl gives off flavors at high temperatures, which is why most use it for beer serving/beer gas tubing/transfers.

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Old 06-23-2009, 03:46 PM   #5
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I like it except for the use of vinyl tubing. Vinyl gives off flavors at high temperatures...
It is my understanding that vinyl is good for up to 180 degrees? Lots of people using vinyl on a MT no?

Any idea where i could locally source some better tubing, silicone I assume? Shipping is a hassle and $$$ for a single item.
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Old 06-23-2009, 03:59 PM   #6
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Yeah, shipping is going to eat you up for just one piece of tubing. Plus the silicone is the most expensive tubing out there, pretty much. I'm pretty sure HomeDepot/other like store would have NSF grade hot water tubing. You won't need it to go over 180*F-ish due to your process, so they should carry something. Just remember that vinyl is better for cold.

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Old 06-23-2009, 04:19 PM   #7
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Maximum operating temperature on watts vinyl tubing is 175F. Lots and lots of people have used it for brewing with no ill effects, including myself over the last 5 years.

Taken from the Watts website:
Maximum operating temperature: 175 F. Brittle temperature: -40 F. Material: Clear, nontoxic, FDA and NSF listed PVC compounds. Hardness: A. Durometer: 80 listed by NSF, glass-like clarity and smoothness, abrasion-resistant, handles a wide variety of chemicals, gases, and liquids, visual contact with material flow. Can be used as protective or insulating cover, drainage lines of all kinds.

I've always used the braid reinforced stuff for brewing and it's done fine.
Tom

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Old 06-23-2009, 04:30 PM   #8
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Hey, thanks for the info Tom, I figured i wasn't the only one using vinyl tubing on a mash tun.

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Old 06-24-2009, 04:11 AM   #9
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Originally Posted by leboeuf View Post
Maximum operating temperature on watts vinyl tubing is 175F. Lots and lots of people have used it for brewing with no ill effects, including myself over the last 5 years.

Taken from the Watts website:
Maximum operating temperature: 175 F. Brittle temperature: -40 F. Material: Clear, nontoxic, FDA and NSF listed PVC compounds. Hardness: A. Durometer: 80 listed by NSF, glass-like clarity and smoothness, abrasion-resistant, handles a wide variety of chemicals, gases, and liquids, visual contact with material flow. Can be used as protective or insulating cover, drainage lines of all kinds.

I've always used the braid reinforced stuff for brewing and it's done fine.
Tom
+ if the max operational temp is 175 then its fine. I use it too, and checked this fact first
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Old 06-24-2009, 04:17 AM   #10
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Props for the inexpensive MLT! I do think the non-high-temp tubing might be an issue but that's easy and cheap item to deal with.

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