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