1) Yes, the burping is only needed if you open the keg to the atmosphere after a good purge - to add dry hops for example, or a non-closed transfer to the keg.Glad this thread is helping. I just wanted to clarify a few things:
1) I would leave the burp approach in the dust. There are better ways!
2) When you fill with Starsan or other sanitizer you need to push it out under pressure. (bottled CO2) Using fermentation gas will not work and is a different approach. See #3
3) Daisy chaining empty kegs to your fermenation gas output uses empty kegs. Many people use two kegs, one hooked up to the fermentation blowoff and the 2nd hooked up to the 1st keg. The airlock goes on the last keg and the 1st keg is the one used for adding your beer to. But there are many permutations. In the end, it is pure CO2 that is free if your fermentation chamber allows for it.
2) It only takes ~2 psi to push sanitizer out of a keg (but add another 0.5 psi for each additional foot the outlet is above the keg.) So, if your fermenter can be even slightly pressurized, you can use fermentation CO2 to push sanitizer out. BUT, if you hook the keg to the fermenter at the beginning of the fermentation, there is no need to have it filled with liquid.
Brew on
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