[jswick93]

I am not sure myself. But there seems to be plenty of ptfe based lubricants online and even pure ptfe lubricant, so I'm sure it's a thing. It looks like it's available in some different ways.

[SkyHighLer]

Originally Posted by furrywall11

Probably already been asked but...
Has anyone had any tests done for industrial lubricants in the concentrates that are made using the CMEP-OL recovery pumps?

Originally Posted by Old Gold

I forget who (Pure777Extracts?), but someone mentioned Analyticial360 claimed there was no contamination in their product. I have not been able to send to a lab recently, but solvent flushes are clean and have no smell. Nothing funky from the only recent test results either, but I doubt the person who sent it out for testing mentioned anything about lubricant a he doesn't have any knowledge of pumps, closed Loops, etc, as much as I try to educate about my process.

Originally Posted by jswick93

I think whether or not your meds are contaminated depends on the specific CMEP-OL you have, rather than the model itself. I can say for certain that if I were making product with mine it would be contaminated. The grease inside my crankcase is bad enough that it's getting past the pistol seals. I spoke with someone who works on these, who said that it's a bigger problem with the first of these that came out, and that the newest machines have bearings which are lubricated with ptfe instead of the grease/graphite used on the earlier models. I don't know about this, but this is what I was told. He says that he hasn't seen a problem after a rebuild and clean out with those newer bearings. Anyone know anything about this?

Let me assure you, no labs are testing extracts for non-volatile residue contamination whether it's the 'mystery oil' from the butane or pump crankcase lube blow-by. I've discussed this repeatedly with them, they'll tell you if you will tell them specifically which chemical(s) you are searching for, and provide the money upfront, they will purchase the necessary reference standard(s,) and do the testing. It's all about the money to them.

PTFE is not permissible in extracts that could possibly be dabbed. Because I said so.

"Safety[edit]
Pyrolysis of PTFE is detectable at 200 °C (392 °F), and it evolves several fluorocarbon gases and a sublimate. An animal study conducted in 1955 concluded that it is unlikely that these products would be generated in amounts significant to health at temperatures below 250 °C (482 °F).[35]

While PTFE is stable and nontoxic at lower temperatures, it begins to deteriorate after the temperature of cookware reaches about 260 °C (500 °F), and decomposes above 350 °C (662 °F).[36] The degradation by-products can be lethal to birds,[37] and can cause flu-like symptoms[38] in humans. See polymer fume fever."
https://en.wikipedia.org/wiki/Polyte...thylene#Safety

[BigJohnny]

Originally Posted by Old Gold

How do you "lubricate" with PTFE?

Either you coat the bearings/races in a PTFE film and/or use some kind of dry spray, like a dry graphite or dry silicone lubricant.

It can be sprayed on but once the delivery fluid evaporates all that's left behind is a dry (and slippery) film on whatever part you sprayed.

[jswick93]

I'm actually unable to find any bearings like this online...the closest I have found is full ceramic bearings in the same size at the 6908rs with a ptfe cage.

[Rekoj]

I'm pretty curious about the new double diaphragm oil less pump from bhogart. Anyone have any info on them? Allegedly are twice as fast as the CMEPOL

[FishmanK]

saw them @ BHOgart recently

visually, they are SOLID in scale/size and visible construction...

They had several CMEPOL in plastic there, in one corner...

[Rickys bong]

Originally Posted by Rekoj

I'm pretty curious about the new double diaphragm oil less pump from bhogart. Anyone have any info on them? Allegedly are twice as fast as the CMEPOL

3bar (45psi) max output pressure. Might be useful for a first stage booster pump like the concept I proposed with the Gast pump, but not much use as a recovery pump.
Efficiency will drop off quickly as output pressure rises, so unless you build a very efficient aftercooler to keep output pressure low yer going to be disappointed.

[GLDextracts]

Originally Posted by Rickys bong

3bar (45psi) max output pressure. Might be useful for a first stage booster pump like the concept I proposed with the Gast pump, but not much use as a recovery pump.
Efficiency will drop off quickly as output pressure rises, so unless you build a very efficient aftercooler to keep output pressure low yer going to be disappointed.

Would a chiller coil be enough? I was looking at that pump today, I have 2 trs21 units and was thinking of doing dual recovery but a recovery pump that's twice as fast should be the same I assume. I was going to get the new bhogart or a cmel pol

[Gray Wolf]

Originally Posted by Rickys bong

3bar (45psi) max output pressure. Might be useful for a first stage booster pump like the concept I proposed with the Gast pump, but not much use as a recovery pump.
Efficiency will drop off quickly as output pressure rises, so unless you build a very efficient aftercooler to keep output pressure low yer going to be disappointed.

The Gast was fast, but as RB notes, limited in pressure, so we used it as a primary pump and used a refrigeration pump for final recovery.

If you run the right mix cold enough, 45 psi should be adequate.

They are fussy to operate, in that they don't like to start under pressure, or pull vacuum while also producing pressure.

[Rekoj]

Originally Posted by Rickys bong

3bar (45psi) max output pressure. Might be useful for a first stage booster pump like the concept I proposed with the Gast pump, but not much use as a recovery pump.
Efficiency will drop off quickly as output pressure rises, so unless you build a very efficient aftercooler to keep output pressure low yer going to be disappointed.

Thank you for that, much obliged!
So In that case the cmep ol is still the best option? Unfortunate I hear consistent quality control issues, makes me weary about investing in the product. I'm in the progress of making my cls& trying to figure out how I should run. Passive vs active....