For use on small diaphragm pumps I've heard of some using a reservoir to keep the ice away from the pump screen. I think they had a container, which was closed and had some height to it. They brought the sap in at a level a few inches above where the pump connected. Somehow, this allowed the ice to float while the liquid was pumped under it. Maybe they were 2 chambers, like a septic tank is, the ice stays on one side, the liquid flows thru a low port to the adjacent chamber where the sap is pumped out.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.