Filtering between two kegs

[Peter Smith]

Has anyone setup a filter between two corny kegs and filtered a beer. Did it change the flavour and if it did what changed?

[Smiffy]

I filter between a pressurise-able fermenter and the keg, but used to do it between kegs before I had the s/s fermenter.

A 1 micron filter will filter out all yeast but none of the flavour. A finer filter could potentially affect the flavour.

If you are filtering carbonated beer, you will have to keep it under sufficient pressure all the way through (i.e. pressurise the receiving keg first) otherwise you will loose carbonation. Obviously, the lower the temperature, the less CO2 pressure you will need to maintain carbonation. I do this by putting enough pressure on the supply keg to get the beer moving through the filter, then when the flow slows down too much, let a bit of pressure out of the receiving keg, don't try to rush it.

Flush the air out of the empty keg with CO2 first otherwise you will risk shortening the life of the beer.

[Hamish Jones]

I filtered for the first time the other week 1 micron filter and it did bugger all just took ages, it was a 10" polyspun one what type are you using Smiffy

[Smiffy]

Mine is a 10" one, it seems like paper. I use a bit of pressure to speed it up, if you were doing it just with gravity it will take ages. What do you mean yours did bugger all?

[Hamish Jones]

I had my pressure at about 5psi so as no to wreck anything but it just didn't really filter anything the three beers I did all had haze, the filters were Davies 1 micron polyspun, maybe they are just a bit shite or were mislabelled