Primary Fermentation Pressure build?

[brewer5548]

Brewing American Light.... What PSI does the plastic pail build up to. I was thinking of using an automatic bleeder to set to a controlled pressure with a low and high setting,... any suggestions and does it matter the quantity of the batch?

 

[SilverZero]

It will build up until it blows the lid off if you're not using a blow-off tube or airlock. Why are you wanting to keep it under pressure?

 

[beninan]

With an airlock or blowoff tube installed on thd bucket, there really won't be any pressure in it (well there will be a little, but that's not important).

You wouldn't want to build up pressure in a plastic bucket, or bad things may happen, like beer exploded everywhere.

There are ways to have a pressurized fermentarion for certain benefits, but that requires more equipment other than a bucket.

 

[brewer5548]

Just wondering if Ideal primary fermenting is supposed to have pressure. The pail has a little pressure in it and it is bubbling every 10-15 seconds. Just want to make sure if I am supposed to have pressure ..how much it acutually supposed to be... so i guess I am trying to understand why we need such an air tight pail ?

 

[beninan]

Just wondering if Ideal primary fermenting is supposed to have pressure. The pail has a little pressure in it and it is bubbling every 10-15 seconds. Just want to make sure if I am supposed to have pressure ..how much it acutually supposed to be... so i guess I am trying to understand why we need such an air tight pail ?

Don't worry about the small amount of pressure in there. The pressure, or lack of pressure, doesn't have any effect of the actuall product. You really dont need an air-tight seal either. It's recommended for sanitary reasons, but its not necessary. A lot of people have actually been doing open fermentations (literally open).

 

[SilverZero]

Pressure is only important in the bottle or keg. Before that, it's not a factor, unless you have too much in which case you might be mopping your ceiling.