I know the trs is the sparkless model, but I’m wondering if there is a difference mechanically between the two?
Does the trs just have a spark less motor? They look identical to each other but the product catalogue says that the tr21 isn’t rated for use with flammable refrigerants.
I think except for some glue on the contacts and a rocker switch on the trs they the same. Anyone can correct me if I’m wrong
I tried to ask CPS the difference between the two models and their response was basically “Dont use either for extracting CBD oil.”
I didn’t mention using it for extracting so they probably get emails like that all the time. When I tried to ask a follow up question they didn’t reply lol.
I have both in my graveyard. I tore them both down many times any they are near identical. Mine always leaked quick. That company that’s modding them look cool I’d prolly go with those guys if I wanted a pump and that pump was a trs. I run passive tho. I need to liquidate my graveyard…
Did you know what the name of the company is? Or what modifications they’re doing to them?
I’ve seen the aftermarket piston kits available for them, is that what you’re talking about?
They really said don’t use either?
I have a trs-21 I was hoping to put to use soon.
Main solvent recovery will be all passive with the trs-21 solely being used to recovery the material columns
Do you think id fuck this tr-21 up by trying to use it to distill desiel? If I was able to maintain pressure?
Those fuckers say it’s good with class A3 refrigerants which should cover propane and butane
I know, it says its good for butane, propane, and isobutane right here too.
I think they just don’t want to tell someone something and they blow themselves up.
From a liability standpoint this makes a lot of sense
Just linking these threads
If you get a chance, would you mind sending me a picture of the glue on the contacts on the trs21 you’ve got in your graveyard?
I’m wanting to put glue on my contacts but don’t know if I’m going about it the right way.
Did you ever end up using this tr21? Success? Did it blow up? I bought one new in the box from a guy off Facebook not realizing he labeled it wrong as trs21…
Trs21 rated for butane, tr21 isnt rated for that, iv used both, to me ut seems the trs21 needs to be rebuilt more often? Not sure y but the tr21 lasted way longer
TR21 and TRS21 pumps have been used in this industry for a long time, but they are definitely no longer the industry standard (especially if it is a licensed lab). They are great pumps for a small boutique operator that is doing it in a well ventilated environment and have the plug secure and away from the process area. I recommend keeping the pumps off the ground because there is blow-by inevitably with the piston design and there is a hole on the bottom of the crank case where that vents out. Difference between the TRS21 and TR21 is that the TRS has a cord that is fixed onto the unit. They made that change because if you accidentally kick the cord with a TR21 near the unit, you could create a spark/ignition source. Hence the “sparkless” or “S” on the model name. I also agree that they cheaped out on the parts/build quality over time because we used to sell a LOT of these pumps and a lot of parts as well at Xtractor Depot and it went kind of downhill as standards for recovery pumps in this industry increased. I recommend a properly cooled coil (dry ice slurry) to be used with the pump to give it the longest lifespan. I have used everything from the Diablos, Appions, to the TR/TRS21, CMEP OLs, and I think the TR21/TRS21 were some of the best budget friendly recovery pumps known to most extractors. Crazy to think that this industry is old enough for me to share this history lesson lol
The CMEP-OL is 100lbs. The trs21 is significantly lighter at 28lbs.
