This is the pump I use https://www.zoro.com/aro-double-diap...aa/i/G2537026/
I would be afraid of one rated for 180 max, even on mine I push it. I heat in the finisher to 205-210, draw into the mixing tank, add the DE and stir. Then I pull it thru about 8' of 1" silicone hose before it gets to the pump, (by then maybe it has cooled to 200F?). I am in my third year with this pump. I also use it to move syrup. I move syrup from the evaporator draw tank, thru the pump, the bypass and to the finisher, I also move syrup from barrels to the finisher( in winter I need to use a band heater on the barrel for 2-3 hrs or it pumps very slow.
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.