I'm not *certain* why there isn't a liquid filter, but afaik there isn't one (certainly not in serpulo, maaybe erekir which does different things) its lack could certainly be a reflection of "ILR if you accidentally mix liquids you're not getting them un mixed without a TON of effort". For now, keep your water extractors away from the cryo line.


edit: though, thinking about it more...I also haven't exactly seen a need for one, since most applications i can think of FOR one are either
1. disposing of accidental water in the cryo line just before it gets to something that needs cryo
2. going to jam up anyways unless you somehow get the input ratios and output ratios perfect.