STP series temperature reducing tank - 18 liters

Description

The STP series temperature reducing tanks are to be installed in solar systems before the expansion tank. They are necessary to disperse heat and therefore reduce the working temperature. Their application guarantees greater duration of the solar expansion tank.
The diluting vessels of the STP series can also be used as DRAIN-BACK systems.
DRAIN-BACK systems protect the boiler from overheating and solar collectors from freezing.

HOW DRAIN-BACK WORKS:
when the pannels temperature is lower than the boiler temperature, the solar circuit pump is still and the fluid remains in the lower section of the circuit (below the DRAAIN-BACK level, see data sheet). This safety feature prevents the reverse heat exchange (meaning when the boiler gives heat back to the pannels), as well as the freezing of the pannels during the winter season.