With traditional fixed flow through a liquid cooling design, coolant continuously moves between the cold plate and the heat exchanger, regardless of the coolant’s actual temperature. This decreases cooling efficiency and increases coolant usage. 

To remedy this design limitation, thermostatic valves are used to direct coolant flow either to the heat exchanger or back through the system, solely based on coolant temperature. This ensures efficient usage of coolant, facilitates stable and uniform electronic device temperatures, and reduces overall system wear, extending the life of system components.