I have a triple ladder to using 3/4 mainline. The first two lifts are S shaped with another 3/4 line going over top spliced in with Y,s and lifting about 6 feet each. The third is a two pipe system made with 1/2 inch tubing going up 10 feet. I had very good results with this. Especially the two pipe lift. That mainline has around 100 taps on it and vacuum at the releaser was 25”. I didn’t measure vacuum below the lifts but monitoring the laterals it kept the sap evacuated. I also monitored it coming into the releaser. It compared to the other mainlines with similar amount of taps.
12X16 Sugarhouse and 16x24 attached woodshed
1000 taps
120 3/16 tubing
And still some buckets
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