OK so my last batch finally dropped below 1015 but it took 3 weeks which is insane for a hefeweizen, I used a elbow barb attached to a hose and coke bottle as an airlock so I could fit the entire FF, including stand and ball into my new keezer for precise temp control, in any case, I have a second FF lid that I attached a ball lock adaptor and ball lock post to through the air lock hole with a gommet and it makes a nice airtight seal
I used the silicone oring as well as 3 of the foam ones in the lid
I attached 3 short pieces of tubing, all with clamps and reducing couplers to get 1/2 ID tubing down to 1/4 inch ( this took a while and was leaky until I used the clamps and ran that into my filter then into my keg
IT WORKS
Ran about 3 - 4 PSI, no liquid leaks but the lid totally bulged outwards and that warped the seal enough to let a little bit of CO2 out, but enough pressure to push the beer through a 1 micron filter
all together, this was a fun experiment but a PITA and it took way longer than just transfering to a keg and doing it from keg to keg
Since I was trying to save time, and I did not, I won't do this in the future, besides, I think that letting it sit in the keg before filtering helps clear it, thats what I did with the Kristal weizen that took 1st in class, second place best of show in Boston.
The thermowell in the top of the lid, however, works AWESOME, I use the temp controller to monitor the ambient in the keezer with some sticky foam isulation over it to balnance the swings, and a second thermometer right in the middle of the wort so I can adjust the ambient accordingly without causing huge swings in keezer temp
I have a video to show the pressure transfer, need to edit though b4 posting