The sealed filter worked really well. I was only filtering ethanol from a -40c extraction, so there was not much suspended fats or lipids, but quite a bit of resin glands and other particles that were knocked off during extraction. I put a layer of silica and celite on top of the sintered filter disk and patted it down gently, then ran through some ethanol through the filter a few times until it came out clear with no sediment. I was thinking of making a slurry and feeding it in through the top, but didn’t know if the cake would come out uneven like that.
I used a glass carboy racking cap to pull a vacuum on the filter, then pulled unfiltered from a bucket. I’m thinking of switching out the carboy for a keg, the glass is pretty thick but have no idea how much negative pressure it can handle without implosion.
It is really nice to be able to pull/feed from a container rather than keep dumping into a funnel, this made the whole extraction process so much easier and enjoyable. I was able to turn on vacuum and go do something else while it did its thing.