Reflux still run , water flow and dual pid temperature controller explanation.

Just showing how I separated the flow of water with a y piece to reflux condenser witch i control the cold inlet water flow with a needle valve tap and the main horizontal condenser is un restricted flow of input at the bottom and the top part is the output flowing straight back to the esky. Column is 1 metre high and 2.5 inches diameter. All parts can be purchased at Aliexpress.

[@samansaadzadeh1833]

Why the out put water from reflux condenser is not going back to 120 litter tank?
120 litter is enough to run full distillation process?

[@danssv8]

The reflux condensers water is very hot more than 65 degrees centigrade.