FrostControl 12 mm john guest connection

The perfect frost protection The currentless safety/drain valve automatically drains the water heater if there is a risk of frost. This prevents the system from freezing and ensures that your water supply is on the safe side. Function: The water is drained under pressure via an outlet connection if there is a risk of frost (ambient temperature approx. 3 °C). The safety/drain valve only closes again when the ambient temperature is within the frost-proof range (ambient temperature approx. 7 °C). The valve can also be opened manually AL-3010431