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Old 05-28-2012, 03:08 AM   #1
milesvdustin
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Default Water filter build

So I built a water filter. Instead of using the seven dollar shutoff with the adapter and quick disconnect, I found a simple shutoff at walmart in the garden section for $4. All I needed was the adapter from the threads on the filter and then this piece. Saved me a bit of money!


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Old 05-28-2012, 11:13 PM   #2
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The cheap valve worked amazingly well today during brew day.



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Old 05-28-2012, 11:36 PM   #3
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I have the exact same thing, and yes, the ball valve/adapter combo is great. I have another on the end of my hose so I can hook it up to my CFC at the end of the brew, and throttle supply water.

I also like that you can buy micron filters to drop in, and once you sanitize it, it becomes a beer filter, provided you push with CO2.

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Old 05-29-2012, 02:43 AM   #4
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What sort of filters and adapters are needed to filter beer?

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Old 05-29-2012, 09:16 PM   #5
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The filter is a standard 10" element; you can find them at Amazon, eBay, etc. Ensure you DO NOT get carbon filters - while great for drinking or brewing water, it's not so great for finished beer.

As to the adapters, you need two kegs (or at least one and a bucket or carboy, but watch for aeration), and associated fittings. Gravity does not provide enough force to push beer through a 5 micron or smaller filter. You use the keg and CO2 to put a few psi on it, and force it through.

You can pick up barb adapters for ball or pin lock kegs at your friendly LHBS, or internet mega-stores if not available locally. They're about $7.

In addition, most sites I've looked at recommend a two-stage filter setup, one 3-5 micron, and one 0.5-1 micron. At 0.5 microns, you're removing the majority of the yeast, and almost all haze causing proteins. At 1 micron, yeast remains, and you don't get as much haze out.

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Old 05-30-2012, 06:43 PM   #6
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at <1 micron, you are stripping hop oils from the beer. acutally, you start doing that at below 5 microns (plus the fact that any absorbant filter removes some regardless of the size, just by virtue of being absorbant). yeast cells are 20+ microns, yeast flocs are 100+ microns, and hop particles/lees/trub is/are normally 50-500 microns. there is no need for a sub-5 micron filter for finished beer.



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