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**1MadScientist** · 02-20-2013, 09:01 PM

I have an APA fermenting now, it started with a 1.058 OG and using US-05 yeast.

Tonight will be 4 complete days and when I measure the gravity tonight I expect to start a diacetyl rest. I'm currently at 65F @ 7 psi.

I'm wanting to crank up both the temperature and pressure like some of you do (WortMonger is one). I want to go to 70F for the d-rest. Would 30 psi be pushing the envelope, if it will get that high?

I'm looking at this chart;
http://beerismypassion.files.wordpress.com/2012/03/co2-chart.jpg

kwadric · 02-21-2013, 12:53 PM

Do you think that you could water filter out the "sticky vapor" in the gas? Something simple like using a reservoir a quarter full of water where the gas enters below the liquid level and the vent to the spunding valve is at the top. That might trap any "sticky vapor" in the water, but I think that any steel would still rust.

**MalFet** · 02-21-2013, 01:12 PM

Quote:

Originally Posted by kwadric

Do you think that you could water filter out the "sticky vapor" in the gas? Something simple like using a reservoir a quarter full of water where the gas enters below the liquid level and the vent to the spunding valve is at the top. That might trap any "sticky vapor" in the water, but I think that any steel would still rust.

I use one of these:
http://www.amazon.com/TEKTON-4755-Oil-Water-Separator/dp/B001NSYV58/ref=sr_1_1?ie=UTF8&qid=1361455934&sr=8-1&keywords=inline+air+filter

Islandboy85 · 02-21-2013, 07:31 PM

Quote:

Originally Posted by MalFet

I use one of these:
http://www.amazon.com/TEKTON-4755-Oil-Water-Separator/dp/B001NSYV58/ref=sr_1_1?ie=UTF8&qid=1361455934&sr=8-1&keywords=inline+air+filter

I may have missed this idea earlier in the thread, but could you also just run the CO2 under water, then through the pressure regulating valve? Think water bong. The water should scrub out all the stickies shouldn't it? It water wond would some cheap vodka?

kwadric · 02-21-2013, 07:36 PM

Probably a better idea than what I suggested. The oil/water filter is designed to keep moisture created by the compressor out of pneumatic devices. Water filtration is an simple industrial method to remove particles from exhaust.

Islandboy... that is exactly what I was talking about.

Malfet, are you also having rust issues w your spunding?

**MalFet** · 02-21-2013, 07:56 PM

Quote:

Originally Posted by kwadric

Malfet, are you also having rust issues w your spunding?

I use a digital mass flow controller with inline pressure transducer. It's the same principle as a spring-driven spunding valve, but it is controlled by a microprocessor. I am, however, having some trouble with the valve on that. I'm going to take it apart tonight and hope I can clean it.

owentp · 02-22-2013, 12:54 PM

I read your article about controlle back-pressure relief and was wondering how you made the sampling tube and you mention that you got some yeast coming out of your valve? Was that the control valve that you set the pressure? I have a set-up for a corny keg and just want to know how much of a mess I could have on my hands.

**1MadScientist** · 02-22-2013, 09:34 PM

With all the talk this month about spunding valves corroding and meeting their early demise, can we add enough water to our 'ganged' corny (or other pressure tank, i.e. water filter housing) that the water is above the beverage tube?, like kwadric mentioned.

I'm guessing that the water filter housing can be fitted with a down tube.

Would this principle work?

Quote:

Originally Posted by SankePankey

1) Find a way to prohibit krausen from getting all up in your spunding valve. Mine is to use a second pressure vessel (corny) that is ganged to my primary as a blow-off collector- and I put the spunding valve on it. Another way would be to just not fill as high as I do.

I also use a corny for this purpose (to protect the spunding valve), I got the idea from this thread from Poindexter.

Mysticmead · 02-23-2013, 12:55 AM

Quote:

Originally Posted by 1MadScientist

With all the talk this month about spunding valves corroding and meeting their early demise, can we add enough water to our 'ganged' corny (or other pressure tank, i.e. water filter housing) that the water is above the beverage tube?, like kwadric mentioned.

I'm guessing that the water filter housing can be fitted with a down tube.

Would this principle work?

I also use a corny for this purpose (to protect the spunding valve), I got the idea from this thread from Poindexter.

what I was planning on doing is this. take a recipe for a 5 gallon beer. only make 4 gallons. That of course would be a higher gravity beer than the recipe intended. daisy chain 2 corny kegs and have 1 gallon of boiled and cooled water in the second keg. as the fermentation takes place in the first keg, the CO2 would be filtered through the water in second keg and it would carbonate the water. When everything is done and I have 4 gallons of finished carbonated beer, transfer it into the second keg with the 1 gallon of carbonated water. If filled from the liquid out side it should mix with the water as it fills making 5 gallons of beer as intended by the recipe.

think that would work?

Islandboy85 · 02-23-2013, 01:08 AM

Quote:

Originally Posted by Mysticmead

what I was planning on doing is this. take a recipe for a 5 gallon beer. only make 4 gallons. That of course would be a higher gravity beer than the recipe intended. daisy chain 2 corny kegs and have 1 gallon of boiled and cooled water in the second keg. as the fermentation takes place in the first keg, the CO2 would be filtered through the water in second keg and it would carbonate the water. When everything is done and I have 4 gallons of finished carbonated beer, transfer it into the second keg with the 1 gallon of carbonated water. If filled from the liquid out side it should mix with the water as it fills making 5 gallons of beer as intended by the recipe.

think that would work?

So long as you're not trying that with a high gravity recipe to start with it sounds good. Don't want to stress the yeast.