Netsplitter:
In general, it is not a good idea to tee two (or more) 3/16" lines together. You may decrease natural vacuum on one or both lines because of the flow restrictions. The 3/16 does not behave like a "normal" piping system, the flow is dominated by the surface tension/siphon forces. Also, the tees in a 3/16 system are a major constriction.
Generally, if you have good grade, each separate 3/16 line is run to the collection point. Or you can connect them to a larger line. A lot of design decisions depend on your specific situation: grade, number of taps, distances, etc.
I would live to be ready to tap by the first of the year, but usually, I am still installing at that time.
Give an email (keith.heasley@mail.wvu.edu) or call if you want to discuss.
Keith
2018: 684 taps: 525-3/16" Gr.,159-3/16" Hybrid; Mountain Maple Super Sap Sucker, CDL 600 RO - 131 gal.; retired from WVU in May
2017: 439 Taps - 3/16" Gravity, Goulds 18GBS15, CDL 2X6 Drop Flue, Wes Fab 7" SB Filter Press, Smokey Lake WJ Bottler - 90 gal.
2016: 258 Taps - 3/16" Gravity, Honda WX15, NGMP 2X6 Flat Pan, Deer Run 125 RO - 68 gal.
2015: 20 Taps - Jugs, Turkey Fryer and 2-Burner Stove - 2.5 gal.