hello everyone
how can i select the correct expansion valve for the water cooling tank evaporator

system 1
lenght for each steel pipe 6m
thickness 3mm
OD 1 1/4''
total pipe in parallel 30

system 2
lenght for each stainless steel 316L pipe 6m
thickness 1.5mm
OD 1''
total pipe in parallel 20

thanks in advance....