Dual Protection: These safety valves automatically protect hot water tanks and pressurized solar water heaters from dangerous conditions.
Pressure Relief: They automatically discharge water when the internal tank pressure exceeds standard limits (typically between 75 to 150 PSI or 5 to 6 Bars).
Temperature Relief: The long red probe acts as a thermostat sensor. When water temperatures approach dangerous boiling thresholds (usually 90°C to 99°C), the valve opens to release scalding water and prevent structural damage or explosion.