[WaterFarmFan]

Ahh screw it, it is too cold outside to do anything, and what fun is only testing a middle of road application, so I will go straight to the hard stuff - 190 proof grain alcohol. A torture test of -78C(ish) will soon commence...

[WaterFarmFan]

Consuming large quantities of long cured Bangi Haze & Zamaldelica will also be part of the test... Haha

[Old Gold]

Originally Posted by WaterFarmFan

Just curious, when did own/use a chugger? Was yours inline or center input? I read center has better flow than inline. I have seen two versions used on ebay, and I wonder if you had an earlier model? No idea if it will last or replicate results at higher viscosity.

This is the first external fluid pump that I have ever owned, but I have gone through more a dozen of the submersible ones for hydroponic applications. This thing puts all of those to shame.

I had the in-line model CPSS-IN-1 (115v) from Amazon. I ordered it sometime around July/August 2017

[hash head]

what kind of setup are you using for the terpene evaporation? Vacuum steam distillation? rotovap?

[WaterFarmFan]

Originally Posted by Old Gold

I had the in-line model CPSS-IN-1 (115v) from Amazon. I ordered it sometime around July/August 2017

Interesting. I wonder if the inline is more difficult to prime? For initial testing, I added a clear piece of silicone tubing to the top of the output, so that I could see when primed. I had to slightly lift my reservoir, but the air inside the pump immediately cleared.

[WaterFarmFan]

Originally Posted by hash head

what kind of setup are you using for the terpene evaporation? Vacuum steam distillation? rotovap?

Hey Hash head. I am just using a vacuum oven with a nitrogen backfill to volatilize terpenes and now a 4-stage condenser/cold trap setup to collect them. I mimic a freeze drier in parts of my process (beginning and to periodically cool material to minimize decarbing), by using liquid nitrogen to freeze material which induces sublimation, but ~70% involves heat (~215F max) at various vacuum levels causing evaporation. No external solvents, including water, are added, so I just use basic separation techniques to isolate terpenes from natural hydrosol. With enough process time, I think that a small amount of water could be added to pulverized flower material that has been dried and cured, but there is already so much h20 in fresh frozen that it seems counter-productive, because at the end of this process, I want material that is close to dry, so that I can do a -50C ethanol extraction to get all the cannabinoids as well as any terpenes still trapped inside trichomes.

[WaterFarmFan]

After a quick ponder of using 190 proof alcohol next to motor with open slots spinning at 3500 RPM, I decided that some basic precautions were in order. First, I secured the pump and raised it ~2" on a footer board to be more inline with the reservoir output. With a bit of spare aluminum sheeting and some foil tape, I made a covering that should prevent any accidental etoh from directly entering the motor.

I need to properly secure my hose fittings, but it is ready to test, and I will be straight to a torture test of 4-6 hours at -78C. If it is going to break/fail, I want it to happen sooner than later.

[gumby420]

I've been using a pump from Eheim for about two years. First one lasted about a year and the second one is on about 6 months or so. I use my old 10gal vac chamber pot filled with a denatured alcohol/dry ice slurry and another pot inside that with the pump and another dry ice slurry. My temps are always around -40.

[Gray Wolf]

Originally Posted by WaterFarmFan

Interesting. I wonder if the inline is more difficult to prime? For initial testing, I added a clear piece of silicone tubing to the top of the output, so that I could see when primed. I had to slightly lift my reservoir, but the air inside the pump immediately cleared.

Typically a flooded section pump, that requires liquid in it to function.

[Gray Wolf]

Originally Posted by WaterFarmFan

Interesting. I wonder if the inline is more difficult to prime? For initial testing, I added a clear piece of silicone tubing to the top of the output, so that I could see when primed. I had to slightly lift my reservoir, but the air inside the pump immediately cleared.

!@#$%^&*() having edit problems