Buy, or build, another and put it before your flood port and chill you butane that way, instead of chilling your tank.
On the recovery side its pretty straight forward......
In a dry ice bath, the MT 69 ports and tube are too small for good flow and can plug if there is much water in the butane.
We made a much more effective one out of 20" of 3/8" stainless tubing in a insulated stainless tank of chilled liquid.
The Ghetto prototype.......
[URL=https://www.icmag.com/ic/picture.php?albumid=55897&pictureid=1304601&thumb=1]View Image[/url]
Fittings are 1/4 SAE 45 deg flare. Standard in refrigeration, automobiles, and beverage. I mention this not to troll, but because it is a safety issue, and will save you some cash when you switch up to 3/8 or 1/2 and realize the threads of the 1/4 in are the only ones that line up, at least that is my understanding. (I could be wrong cause I buy SAE fittings and convert to 1/4 NPT.)
In a dry ice bath, the MT 69 ports and tube are too small for good flow and can plug if there is much water in the butane.
We made a much more effective one out of 20" of 3/8" stainless tubing in a insulated stainless tank of chilled liquid.
I haven't heard of that one perma. The butane running from a ambient temp tank into the chilled mt69 is chilled fast enough?
It sounds way easier to chill since its so small. In your pic is that salt ice bath?
Why are 3 hoses coming out of the blue bucket?
You can do this with dry ice as well?
Can you post a pic of the recovery setup?
The mt69 fittings look like 1/4 jic and they had a little rubber gasket on top of then. Is that needed? I pulled one off and couldn't get it back on.
Copper has a C rating with butane, i want something like grey wolf has stainless steel, but only 20'' coil? is that enough? to chill the tane?
Nakadashi, where did you acquire your stainless steel coil?