I'm starting to ferment in kegs, and want to naturally carbonate my beers by using a spunding valve. My batches yield 3 kegs, and I'm already using a 4º keg to aerate them after no chill and after the fermentation is done to transfer the beer to clean kegs.
How to set the pressure on 3 kegs? First I was thinking in just make 3 complete spunding valves. But the parts here for me are a little expensive to do that. So I made a interchangeable system based on quick-disconnects that allow me to control 1 or 3 kegs, based on this project.
But I've read an answer here, from MalFet, that says he use a filter cage as a blowoff trap, and somewhere else in other forums (sorry, I was not able to find it again) a guy saying that he uses another keg as blowoff and attach his valve on this keg to avoid beer get the valve at all.
So my real question is: can I connect 3 kegs (by its gas in posts) to a liquid out post of my 4º keg (with some sanitizer inside) and just a single spunding valve on the gas in side? It should work as a big blowoff vessel and a spunding valve, and I'm planning on set the system since fermentation is begun. Do you think that it will work? Any tought to realize this project another way? Thank you.