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Home Brew Forums > Home Brewing Beer > All Grain & Partial Mash Brewing > cooler tun
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Old 04-12-2012, 01:46 AM   #1
matc
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Default cooler tun

I bought a coleman that came without a spigot so I drilled a hole and installed a waterproof valve with a copper manifold. However, when I fill my cooler and open the valve, the flow stops above the manifold. I can't get a syphon out of that damn thing and there's like a gallon left. How come ? I soldered everything ! I'll try posting a picture later on

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Old 04-12-2012, 01:48 AM   #2
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do you have a hose on the end of your valve. A lot of folks don't realize that makes a big difference.

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Old 04-12-2012, 01:49 AM   #3
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It won't pull a siphin without a hose, just like Revvy said..

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Old 04-12-2012, 01:57 AM   #4
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Ok here's my setup.

And no, I stil don't have a hose attached to the end of the valve. I can't find any hight temp food grade tubing at home depot. Any idea ? So by plugging a tube on the other side, I should get a siphon ?
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Old 04-12-2012, 02:02 AM   #5
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Order yourself some silicon tubing. Is that a galvanized washer I see?

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Old 04-12-2012, 02:19 AM   #6
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To siphon, the "outlet" must be lower than the "inlet", otherwise you'll just drain to the level of the outlet and not below. A siphon is created when liquid flows from high to low. In your case you have no tubing to lower the outlet end of the valve below the manifold.

To answer your question, yes, you need a hose and the outlet end of the hose must be below the bottom level of the cooler, preferable by a foot or more, or it will not siphon.

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Old 04-12-2012, 02:22 AM   #7
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All right thanks for the info ! And yes that's a stupid zinc plated washer in there. I can't find stailess washers around here. I'm looking at fastenal.com but I don't know the size I need for my 1/2" brass nipple. I know people use 7/8 fender washer but what should the inside diameter be ?

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Old 04-12-2012, 02:35 AM   #8
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I got SS washers for mine at either Home Depot or Lowe's, can't remember which, but I'm sure it was one of them.

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Old 04-12-2012, 07:19 AM   #9
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Yeah. I wouldn't use the zinc plated washer. It will literally be a corroded mess after just one mash. I couldn't find SS at HD or Lowes but ordered 10 SS fender washers from Fastenal for like $14. Zinc is fine for outside the MLT but you DO NOT want it inside. Throw one of them in a cup of vinegar and you'll see just how not corrosion resistant they are. It'll be corroded in just a few minutes. A 5.2 PH mash will do the same thing in 60 minutes.

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Old 04-12-2012, 08:35 AM   #10
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I use a 1/2 nipple on the interior of my mash tun too. You'll need a 3/4" diameter opening in your washer.

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