piping radiators with monoflow tees

joe_61

Also could I use for example A inch x 3/4 tee and then increase my 3/4 branch up to 1 inch will It work.

joe_61

piping with monoflow tees

I would like to repipe a one pipe system hot water into three zones, on cast iron radiators.Each radiator comes down to the basement with one inch supply and return from rad. What size monoflow tees do I need.And what size branch line on tee