Not sure if anyone else has done this, just I just found that the chinese RE series roto recovery ports can be attatched to a 2" triclamp fitting with very, very little effort.
broke my flask just now, and love finding solutions to problems quickly- this seems rather useful- triclamps are my legos now.
So just hook it up to 2” tri clamp kegs and get much larger reviving flasks?
you’ll need some hoses and valves, but yes you can directly hook a 2" triclamp fitting to a chinese roto- just shave the gasket on one side.
Put a T on your feed line and when you want to empty it just turn the valve or use the same feed line and have it hooked to a pump as lonf as your feed hose goes all the way to the bottom
Get gamma buckets for survival and cut a whole in the top tou can get 30 gallon buckets so you will only have to put the hose in another bucket when it’s full
Well done sir
@Rowan How do you tell the keg (fantastic idea btw!) is full? Is there a cold-trap before the pump?
(We get 20 liters/hour recovery on all three of our 50 liter Rotos. @spdking. Just saying)
How are you getting such fast recovery?!
I don’t run a cold trap anymore, just make sure the upper condenser isn’t dripping - the half liter of ethanol I lose every other day or so if I’m being aggressive with evap is not a big deal to me rn.
I can tell when the keg is full after I put 15 gal through the unit. I can have my fab guy put a sight glass port on the top but as of now have not had any issues paying attention to how much ethanol goes in.
That does, of course, makes sense. 
Place a weight scale under the keg and weigh a full keg 
I DO have a floor scale.
just had it overfill on me for the first time just now actually… super not a big deal, closed the valve (dernord off of amazon are great 2" ball valves, holds the vac well) and put a fresh clean towel under the clamp… towel goes into the centrifuge and I get my booze back. easy.
Ha. You know with the temperature control and agitation might be a good thing to make tea in.
Thank you!!! @Rowan
The fit is not perfect, but it is certainly close enough!
Even with wheels under the keg I’ve got at least 6” of height to play with between the keg and that 2” triclamp reducer.
Indeed!
Edit: I haven’t pulled vac yet. if there is a leak I suspect this silicone “half flat” triclamp gasket https://www.brewershardware.com/F1GASSIL.html will solve the problem.
the also carry them in viton and PTFE.
I usually just make one out of a regular PTFE gasket using a razor blade 
Who’d you get your keg from? USA labs has kegs with all the ports ready to go but they’re 425$
You can get the GLG discount and probs y’all em down quite a bit if you’re ordering multiples
day.