Solutions are in here
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Any ideas on some good ones?
EPDM seals are acetone compatible.
Pull a vacuum on your recieving vessel, or use pressure on your sending vessel, use check valves.
Could use a drill if the bit was long enough
EDPM is an option for the seals on this one.
Not suitable… But I mean… Neither is the fishtank pumps
You can get decent rotary vane pumps with buna-N gaskets for like sub $300. I picked up a procon and a cheap ecoplus pump that I saw in another thread. Going to use it with dry ice/ethanol and a glycol/water/saline mix that can get to -60. Hoping for the best
Let us know the results
if I can find an all stainless one, should I use it
You can get plastic or ss diaphragm pumps that run on compressed air (and are inherently explosion proof) for not that much money (maybe $50-100 more)
ik
but I’m trying to be outside the box
… then again on sale for 160…
I second @cyclopath , useful box in this case because trying to pump flammable liquids isn’t easy to do cheaply and safely. That submersible pump could crack under low temp or corrode and while the solvent is below its flash point, a potential arc in contact with that is bad news bears.
If you’re just trying to condense alcohol, CaCl2 brine will get you to -50 but would corrode you’re steel, a 60:40 PG/water will get you to -60 and that’s totally pumpable with your submersible pump. The only thing is you need a dry ice bucket and a coil to submerse in the cold bath cuz dry ice+glycol=foam
I got some procon pumps, and they actually work wonderfully.(sub $300) I bought a diptube coil, that didn’t fit my solvent tank though so I havent got to try it out in a real world environment yet, but it easily pumped the coldest fluid i could throw at it.(-100ish) They are designed to pump chilled glycol. They aren’t rated super low, but they get there and run just fine. Dylene is the easiest way to get super low, and it’s not to expensive for a super low fluid for heat exchange, you just can’t run silicon hoses.