ABOUT the 1/2 O.D. everywhere, the water comes in at 1/2 I.D. then off
the water heater and off the softener it reduces to 3/8 I.D. lines
about 6" from the outs from there. Also why are you saying use long
turn tees? Just curious, whats the difference between that and a
regular y? For venting I just planned on using "quick" vents, they are
about $5 and allow airflow in but not out. Thanks!