[C'Ya]

I tried moving my after chiller coil to before pump and filter as a test it dropped temperature on IR thermometer to about 29F at filter inlet which filter was outside freezer so putting in freezer before coil should help assuming its restriction may generate some heat. I do not have a sight glass in-line to see if liquid was in the line though
Here are a couple more poorly made examples using ms paint.
This was a butane only run just for tests no material was being extracted

[cyphaman]

The caresaver is only 1600$ US dollars if they can ship it to us for a reasonable price. So not bad at all. They contacted me with these prices.

Please see below your ex-works prices in £STG:



Caresaver Universal Refrigerant Recovery Unit 230v: £988.00 each
Caresaver Universal Refrigerant Recovery Unit 110v: £992.00 each

I am so confused now. I guess I need to rely on myself for answers to these questions. Cheapest system designed for distilling butane ... Doing my homework.

[C'Ya]

cyphaman,
Caresaver uses hermetic style compressor which isn't oil-less so would require oil separator to help remove oil that may exit it, so not best choice since oil separator may not catch all.

[rb extractors]

not sure what you are confused about

[RegisPhilburn1]

Ya the caresaver is a no go, but if your dying to try it out id sell mine for 1k shipped. Mineral oil has no place in medicine

[cyphaman]

I guess both the process itself and equipment required to perform this process are what has me confused. I am just doing personal runs and want to take my time to distill canned butane multiple times in order to try and remove some mystery oil/heavier components.

I assumed I would need:

2 recovery tanks
1 cold trap
1 can tapper
1 recovery machine
hoses etc

the two I am confused with are the cold trap and recovery machine.

a) Skunkpharms cold trap is beyond my means of building, and so Im not sure what I could acquire or purchase that could replicate this. I can build something simple I figure, if all that is required is placing an order on Glacier Tanks.com

b) Why Is an oil-less recovery machine required if it can handle butane and such? This is NEW news to me, sorry I am not too familiar with HVAC. I actually thought the caresaver was the ultimate ideal machine, but clearly that is not the case. ETS uses this machine with their "hydrocarbon" extractors but they use propane.

I do appreciate anyone who can shed some insight. Cheers

[C'Ya]

That's a whole different thread or topic, that I believe has been covered in a more detailed thread, I do have an idea that should clean merc's out hopefully in one pass but have yet to write down, but will when get the time

[C'Ya]

b) Why Is an oil-less recovery machine required if it can handle butane and such? This is NEW news to me, sorry I am not too familiar with HVAC. I actually thought the caresaver was the ultimate ideal machine, but clearly that is not the case. ETS uses this machine with their "hydrocarbon" extractors but they use propane.

simple answer: because we don't want to remove mystery oil to just have the caresaver/oiled pump put it back in.

I'm sure caresaver is a great machine for freezers running r290 and R600a and more, but they use compatible oils in their compressors, but we don't want any oil in are solvent

[C'Ya]

my bad
Our solvent

[cyphaman]

I see your point. I guess I still don't understand how a recovery pump could leak oil into the lines but Ill take it as it is