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Home Brew Forums > Home Brewing Beer > General Techniques > Closed-system pressurized fermentation technique!
View Poll Results: What do you guys think about pressure fermentations? Time for a poll.
I've done it and I liked it just fine! 83 11.16%
I've done it, nothing wrong with it, but prefer normal fermentation techniques. 21 2.82%
I've done it, hate it, and never will do it again! 4 0.54%
I've never done it, but it is on my list! 556 74.73%
I've never done anything. I only brew beer in my mind. 80 10.75%
Voters: 744. You may not vote on this poll

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Old 03-05-2013, 03:04 PM   #1701
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I am trying to imagine what you did with your system. Can you give more step-by-step details on the spunding valve and ganged kegs to keep it from getting all sticky.

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Old 03-05-2013, 09:26 PM   #1702
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Quote:
Originally Posted by owentp View Post
I am trying to imagine what you did with your system. Can you give more step-by-step details on the spunding valve and ganged kegs to keep it from getting all sticky.
As far as the miniature relief valve, some of us have bought from McMaster-Carr #99045K11, I feel that these can be cleaned, if needed. They seem to be made with (Polysulfone, Silicone, Buna-N) only, per the factory; http://www.airtrolinc.com/components/rv_5200_5300.htm
http://www.airtrolinc.com/contact_us.htm
Model #RV-5300-30


2/17/2013 by Mad Scientist Brewhaus, on Flickr

I had an extra keg, I didn't like as much, the blue handle keg is my dedicated 'spartanburg' keg that my spunding valve rides one, to protect my spunding valve from blow off.


11/21/11 by Mad Scientist Brewhaus, on Flickr
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Old 03-06-2013, 06:21 PM   #1703
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That settles it for me then! This is the valve we need to push as what to use. I thought this before but didn't absolutely know what the wetted parts were. I love this thread because I have learned so much. I'm ordering mine today and will melt my brass ones down for something cool. Maybe I'll cast a cool tap handle out of them with a little more brass scrap from my old faucets.

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Old 03-07-2013, 03:20 PM   #1704
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I actually have one of the mcmaster ones as well and it still works without issue.

My brass ones I cannot get the two of them to function. It's impossible to take the thing a part so far.

Note the mcmaster valve above is a 1/8" fitting I believe and you need to find a reducer.

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Old 03-08-2013, 12:20 AM   #1705
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So what is in your second keg wirh the valve on it? The one keg has fermenting beer with a transfer line to the out lines......correct?

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Old 03-08-2013, 12:30 AM   #1706
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So what is in your second keg wirh the valve on it? The one keg has fermenting beer with a transfer line to the out lines......correct?
The blue handle keg is empty (on right hand side). Many folks here use a water filter housing for the same purpose, to catch or trap any krausen that may or may not pass through the jumper hose.

Primary fermenting keg is on the left hand side.
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Old 03-08-2013, 02:46 PM   #1707
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I can testify that mine is working like a champ.
No problems with the spunding valve yet other than there is no easy way to preset the pressure before attaching to the keg.
Notice that I use a corny keg valve on my setup; I pressure up with an air compressor or co2 tank before attaching so I can set my pressure.
I also like the filter housing for corny kegs because it saves room in my fermentation chamber and cleans faster than a keg.

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Old 03-08-2013, 04:27 PM   #1708
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I see! Do you put an actual filter in it or just water? How much water if you do? Do you ever have to empty it? How has it turned out?

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Old 03-08-2013, 04:29 PM   #1709
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When you "set" the pressure with CO2 or air compressor, what do you mean? Don't you have an adjustable valve to set and when the pressure gets to high, it just blows off?

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Old 03-08-2013, 04:50 PM   #1710
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Quote:
Originally Posted by owentp
When you "set" the pressure with CO2 or air compressor, what do you mean? Don't you have an adjustable valve to set and when the pressure gets to high, it just blows off?
He means he sets the spunding valves pressure release amount with a compressor or CO2 first to get it close to what he wants. The problem is this setting is at one temperature and the actual gas he wants to control is at another. (Since pressure and temperature directly correlate, this is not 100% accurate but close enough to not build up too much or too little until the next adjustment while on the fermenting keg). If there was a device that could be set at say wanted carbonation value, and then self adjust with temperature and pressure that would be ideal. I just wish they made such a thing. Then you could actually set a number value instead of a guess of a knob turn while reading a pressure gauge.
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