I agree, 100 taps does not warrant wet/dry. IF and only IF you have good slope put about 15 taps or even slightly more per lateral. When you get vac, reduce to 5 if you can. That is what I was doing all day. I had run an extra branch line because I now have vacuum and I reduced the taps to fewer, trying for 5 but actually I got a range of 3-7 depending on the circumstances at each section. This branch line, about 100 taps on 3/4" line, on vacuum is about 640' long and it feeds into the main line that is wet /dry. I have other branches of about 60 to 150 taps that each empty into the same wet/dry line and then to the 1000 gal vacuum sap tank. All branches go into the wet/dry except one that goes straight to the tank.
On yours, good elevation drop gives natural vacuum when the lateral fills with sap, flat landers should run more like the 5 tap rate because they can't generate natural vacuum.
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.