Liquid Temperature Control Systems for heating provide hot water, or oil, at precise temperatures. In the -1 C to 121 C (30 to 250 F) range, water can be the fluid. For process temperatures up to 260 C (500 F) oil is used as the heating fluid.

To select the correct model for a given application, the desired temperature has to be known. Then the size of heater (kW) and the required flow rate of the fluid in gallons per minute (GPM) has to be selected.

The temperature of the fluid is microprocessor controlled by adjusting the heating and a chiller valve which mixes cold fluid with the hot to maintain the required temperature.

These systems found their original use in plastic fabrication and are now used for any process that requires precise heating from an external source.