First time Pressure fermentation in the keg

[Simonpyman]

Tomorrow i am brewing and will be doing my first pressure fermentation in a 5 gallon keg.

Apart from ensuring I only fill to ~4.5 gallons (i also got some fermcap-c) should I attach a blowoff tube for the first few days and then switch to the spunding valve at 10 psi?

Any tips or suggestions?

 

[Zambi]

I'm following ..
I think I know, but a little knowledge is a dangerous thing, so I won't try it out on you

 

[Bigbre04]

Tomorrow i am brewing and will be doing my first pressure fermentation in a 5 gallon keg.

Apart from ensuring I only fill to ~4.5 gallons (i also got some fermcap-c) should I attach a blowoff tube for the first few days and then switch to the spunding valve at 10 psi?

Any tips or suggestions?

yup lots.

give it 24-48 hrs to prop up(drop 1-1.5P with active bubbles) and then set your pressure to 10 psi and ferment out until 60-70% attenuation. At 60-70% raise the temp to the top end of the yeast and increase the pressure to 15psi. You should get a good clean fermentation that will have some carb on it by the time you crash it.

i do this with Apex Munich lager and have had success so far. i will see if i can dig up the paper that i found about this and post it? i think that i posted it on here before????

 

[Simonpyman]

yup lots.

give it 24-48 hrs to prop up(drop 1-1.5P with active bubbles) and then set your pressure to 10 psi and ferment out until 60-70% attenuation. At 60-70% raise the temp to the top end of the yeast and increase the pressure to 15psi. You should get a good clean fermentation that will have some carb on it by the time you crash it.

i do this with Apex Munich lager and have had success so far. i will see if i can dig up the paper that i found about this and post it? i think that i posted it on here before????

So Blowoff tube for 24-48 hours and then attach spunding valve?

 

[Zambi]

How do you know you are at 60-70% attenuation?
Maybe a daft question, but if I would spund, I can't take samples

 

[Bigbre04]

So Blowoff tube for 24-48 hours and then attach spunding valve?

yup!

How do you know you are at 60-70% attenuation?
Maybe a daft question, but if I would spund, I can't take samples

you pull the beer out of your sample cock!

 

[Bigbre04]

How do you know you are at 60-70% attenuation?
Maybe a daft question, but if I would spund, I can't take samples

I assume you dont have a zwickle on your ferementer? you can look back at old notes or just give it a few days(6 or 7?) and raise it up at the same time as your normal D-rest for a lager.

dont need to do this if you are using ale yeast. Just for lagers to clean up Diacetyl.

 

[HighVoltageMan!]

You can wait until there’s activity or hook up the pressure valve right away, either way works. If you’re using a Corny keg, you might have to hit it with some co2 to get the big seal to set. Sometimes there is a slow leak and you never develop pressure.

 

[Sandy Feet]

You can wait until there’s activity or hook up the pressure valve right away, either way works. If you’re using a Corny keg, you might have to hit it with some co2 to get the big seal to set. Sometimes there is a slow leak and you never develop pressure.

Not fermenting, but when I carb, that is why it take it up to 30PSI, shut the valve off just overnight, and turn it back on the next day at 12.
It sets the seal, and you know you aren't leaking.
I learned my lesson about not hooking up the liquid side before I was ready to serve it too.

 

[Josh Hughes]

So I attach the spunding valve and no blowoff. I pay attention and let build to 15 psi them make sure it goes no higher. Once it slows close it and see if you get 25-30 so it’s carbed up. I use a tilt but you don’t have to. In a corny I did up to 4.5 gallons of wort.

 

[Minbari]

Not fermenting, but when I carb, that is why it take it up to 30PSI, shut the valve off just overnight, and turn it back on the next day at 12.
It sets the seal, and you know you aren't leaking.
I learned my lesson about not hooking up the liquid side before I was ready to serve it too.

You just have to make sure your service lines withstand 40 psi. I serve nitro stout at 45psi

 

[Bigbre04]

Thread 'Spunding valves and Diacetyl' https://www.brewersfriend.com/forum/threads/spunding-valves-and-diacetyl.17912/

I will find the paper that I found referencing this on the large scale. I thought I shared it on here but I didnt see it in that thread

 

[Bigbre04]

This is the paper that I found and the general process that I have been following. Dunno how well it translates to homebrewing but the basic guidelines at the end of it have worked really well for me.

https://www.asianbeernetwork.com/spunding-beer-during-fermentation/

I ended up chatting with the dude briefly on reddit and he seems like a very very knowledgeable person.

 

[BarbarianBrewer]

This is the paper that I found and the general process that I have been following. Dunno how well it translates to homebrewing but the basic guidelines at the end of it have worked really well for me.

https://www.asianbeernetwork.com/spunding-beer-during-fermentation/

I ended up chatting with the dude briefly on reddit and he seems like a very very knowledgeable person.

That is a great article, @Bigbre04! It consolidates, and confirms, most of the spunding advice I've seen on this forum and elsewhere.