Pressure ferment and blow off- Sanke keg

[aeviaanah]

Is it normal for krausen to come out of PRV? What volume can I safely fill my 7.75gal sanke's?

 

[EsoChingado]

What volume did you put into your fermenter? I imagine you should be able to ferment 5.5 gal without issue. To be accurate, 1 gallon weighs 8.3 pounds, so fill to 45 pounds as measured on a scale.
If push comes to shove, use a blow off tube...

 

[aeviaanah]

It was between 5.5gal and 6. How do you incorporate a blow off with a pressure relief valve? Im getting krausen in my pressure relief valve.

 

[crane]

I use ferm cap drops to cut down on the blow off. I have put 6.5 gallons in a 7.5 gallon sanke as well as 13.5 gallons in a half barrel without the need for a blow off.

Despite using ferm cap I have still had some blow off through the PRV a few times. The PRV that I use is plastic and can't be taken apart for cleaning. I had to replace it once after I got beer in it and it got clogged. I built a blow off catcher from a water filter housing and a piece of tube I cut off of a sanke spear.

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