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Old 01-12-2009, 06:51 PM   #1
Rook's Avatar
Jan 2007
Bothell, WA
Posts: 381
Liked 2 Times on 2 Posts

Hey guys, I'm brewing up an IPA this weekend and I've noticed that the brass valve and fittings that I have on my MLT have some corrosion on them, like they're tarnished. Has anyone had instances of this causing off flavors in beer? I'm wondering if I should upgrade to Stainless before saturday....

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Old 01-12-2009, 07:05 PM   #2
The Pol
Feb 2007
Posts: 11,454
Liked 97 Times on 82 Posts

Had mine on my system for 2 years... no problems?

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Old 01-12-2009, 09:35 PM   #3
culaslucas's Avatar
Aug 2008
Boulder, CO
Posts: 397
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I don't have any probs but I did this before using:

"A small amount of lead is added to brass to make it easier to machine, and this can be removed from the surface of your fittings by soaking the brass in a 2:1 mixture of white vinegar and hydrogen peroxide. Soak until the brass takes on the appearance of dull gold (5 to 15 minutes). If the solution starts to turn green, replace it. This process is probably not necessary, but it makes me feel better and it makes the brass look really nifty." (Source: John Palmer.)
Originally Posted by chefmike

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Old 01-12-2009, 10:46 PM   #4
Dec 2007
St. Cloud, MN
Posts: 109

Discoloration is good, powdery corrosion is bad. I have brass in my MLT, a copper wort chiller and an aluminum boil pot. All of them are discolered (seasoned) and should not be scrubbed to a shiney new look. As long as they dont build up with corrosion all is good.

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Old 01-12-2009, 11:17 PM   #5
WBC's Avatar
Jun 2007
La Puente, CA, California
Posts: 2,164
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I went to all stainless but did it over time. I don't think it will hurt anything to leave them on your equipment as long as you clean them every time you brew.

Fermentor 1: Bill's House Ale II, Fermentor 2: German Helles, Fermentor 3: Bill's Schworzbier (Black Bier)
Tap 1: Bill's House Ale II, Tap 2: German Hefewizen, Tap 3: Nut Brown Ale
Future Brews: Stone IPA Clone, Blonde Ale, Budvar Clone, Newcastle Clone
New toy: Blichmann 27 gallon fermentor

“If you find yourself in a hole, the first thing to do is stop digging”

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