No it’s not absolutely necessary but you’d rather shove your dick in hot sand.
Get nitrogen. it’s cheap enough, and you’ll be baffled you didn’t get it sooner
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yall got me convinced. Imma sell my chiller and use the cash to buy a sleeved solvent tank. And then I can hook these trs21 up to a dab rig running into a old diving mask 
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Why not run the chiller on the jacketed tank?
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It only goes to like 26 degrees. Would that still be beneficial? I was under the impression I needed subzero temps to get the recovery time that I want.
I could help you turn your trs pump into a source of heat which in turn chills your solvent. That chiller is worthless in my opinion
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Passive is the way…
Di on your coils, a sleeved solvent tank and 1/2 lines (even 3/8)
Get your solvent tank cold enough to pull a vacuum prior to starting your recovery and you will be ripping.
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So many ways to skin that cat. You’d still need a recovery coil to do the main recovery, but having your tank at 26 degrees would definitely keep nbutane in a liquid state.
If using a propane blend I’m sure you’d have more trouble. Another reason some people like myself prefer straight nbutane.
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I’m listening:D
When you say pull vacuum you are saying you hook your vacuum pump up to your solvent tank while it has solvent in it? So I need a cold trap too?
Another option would be to use the chiller on a couple of jacketed coils to pre chill the solvent before the recovery tank. This is how we’re set up at work, and it definitely helps take some of the load off the Huber.
As you said, there are so many ways to skin this cat.
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No solvent in the tank or pull a vacuum on the head space while you look through a sight glass. Cut vacuum when you see liquid solvent begin to boil.
It’s dangerous, but can be done.
Best to do that with a Venturi style vacuum pump
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Okay empty tank. Check
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It’s basically a giant erector set
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500 bucks for an 8 hr consult. Only thing u will need is a water pump and 2 coils one stainless for gas and a copper one from hardware store. A heat exchanger can be used in place of the 2 coils. Dm if you are cash ready
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Are you talking about subzero temps with that build or are basically telling me to build a heat pump with my trs? Cause I have a coil in coil heat exchanger and a MTA Evo tech mini if I was going to go that route
No im talking about recycling the heat and saving energy. no need for dry ice, although you can boost the system with dry ice. No chiller no problem
What @FicklePickle said.
I only pull vac on my solvent tank when it’s empty (still very small amount below dip tube, my solvent tank is on di well below the bp of isobutane). Get your tank to vac prior to starting recovery and it will stay at vac the entire time. I keep my tank on dry Ice just to be safe but like pickle said the incoming butane from your recovery coil will help chill the tank also.
Way safer to do this with a Venturi style vac.
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No. You submerge your tank in dry ice and also cover the entire thing with dry ice then pour isopropyl down the sides. Your gauge should be - 30Hg on your recovery tank after you do this.
You could also just submerge your tank entirely in dry ice with no slurry. The isopropyl just helps things a little bit but not needed.
I do, right before I start recovering. Even with dry ice covering the tank ime it helps to vac it down initially. Then it will stay at vac the rest of the time. At least this is how it is on my “50lb”tank.
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