What pumps do you use for filtering/winterizing? I have a very waxy crude that I mix at 10:1 with EtHO (aka slurry?). I bring it down to about -30 for winterizing and filtering in a jacketed tank. I’m getting this filter:
Thanks for the shoutout @SpringCreek. @Kit Yep, a 316 SS pump with PTFE diaphragms is pricey, but we stopped selling plastic pumps with FKM diaphragms for low temp pumping for one reason: they were prone to fail at cold temps. You pay less up-front, but more in the long run. Some of our customers ended up splitting FKM diaphragms at less than 10 hours of use. Your mileage may vary.
If you’re hard up for cash, here’s our equivalent of the same pump listed above. It’s $695 in 12 GPM. We make it more plug n’ play with pre-installed tri clamp inlet/outlet, air filter & regulator, quick-connect air hookups, and a small stand: