CBV Rule

Circuit Balancing Valves Performace Curves
   flowRate = Cv×sqrt(dP/d)×Ct×Ce×Cp
GPM: Flow Rate   ⇆   Computed    (back)
CBV: Pipe Size (in)   ⇆   Cv (2in,,equ2, table, equ)
dP: Diff. Press.    (psi)   ⇆   (ft)
d(1): Density (1)   ⇆   (LB/Ft^3)
Turns: Open (5)   ⇆   (%)=Ct (using, compute)
Temp: (C)   ⇆   (F)
Eth: Ethylene (%)   ⇆   Ce (table, equ)
Pro: Propylene (%)   ⇆   Cp (table, equ)

   (math, xlsx, wheel, another wheel)