For various reasons, including (a) lack of bench space, which equals ageing time; and mostly (b) an intermittent case of gout, which means that brewer's yeast is a serious no-no for me—I'm forced to think the unthinkable, namely filtering my brew.
Given my equipment, methods, preferences, and prejudices—50-litre batches, hoppy low-gravity ales (+/- 4% alcohol), and no pumps in the system—I figure on using twin Sankey kegs, driving the beer from one keg into the other with CO2 at some modest pressure, and at room temperature, then tossing the filtered keg into my kegerator and force-carbonating it cold. My kegerator can hold 2 50-litre Sankeys, or one Sankey and whatever Cornelius kegs I can shoehorn into it. Extended lagering, cold-filtering, and fining for clarity, are out of the question, at least in warm weather.
I've seen two basic filter types discussed on other homebrew forums: stacks of cellulose pads in plastic holders, with thumbscrews to keep things tight; and cartridge types, whether purpose built or adapted to filtering beer.
The question is what to put between the two kegs. I've read that the pad types tend to clog quickly, and from past (very distant past) experience I believe it. Plus I've found they can leak or weep. No fun, so I'm inclined to favor a 'whole-house' type of cartridge system, most likely a pair of Rainfresh filters in series, the first being 5-micron, the second 1- or 2-micron, both nominal not actual. Don't want to wring all the goodness out.
I'd welcome any thoughts or opinions on the subject, and any suggestions for a better filtering method than the one I have in mind. Thanks in advance!