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Old 12-24-2009, 04:57 AM   #1
jfenton78
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Default Remove interior rust

I have a 3 gal corny keg that has developed some interior rust. Specifically its a thin elliptical shape with a bubble of rust. What's the best way to remove the rust and prevent future rusting? I've read recommendations to use Bar Keepers Friend and a green scrubbie. The other I've read is a very fine grit wet sandpaper. Whats your recommendations?

jeff

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Old 12-24-2009, 05:14 AM   #2
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I would say BKF and the ScotchBrite will do it if anything will. Obviously not a SS corny if it is actually rust though.

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Old 12-24-2009, 05:17 AM   #3
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OP,

Do you have access to your local water report?

If so what is the Iron content of your water? Do you get rust stains at you faucets ?

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Old 12-24-2009, 05:19 AM   #4
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take a look at this http://howtobrew.com/appendices/appendixB-1.html

Stainless will rust given the right conditions

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Old 12-24-2009, 05:22 AM   #5
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I do have a local water report and I do have some rust stained faucets (bath tub only). But I don't believe this to be the cause as the keg is a 3 gallon corny which I've used only a few times. I did have some oxyclean solutions sitting in it for a while; time not know. So that could have been the cause.

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Old 12-24-2009, 05:25 AM   #6
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Thanks for the link Mista. I forgot about consulting the Brewing Bible. .

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Old 12-24-2009, 05:25 AM   #7
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iron oxide and water = rust.

I think that your iron content could be the cause.

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Old 12-24-2009, 05:29 AM   #8
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Looks like I'll be hitting up the local big box store for some BKF on Christmas Eve. That should be lots of fun.

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Old 12-24-2009, 05:32 AM   #9
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oxalic acid from the hardware store could help as well
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Old 12-24-2009, 05:40 AM   #10
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IIRC, BKF contains a high proportion of oxalic acid.

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