The Caleffi safety valve is suitable for use in boilers and provides excellent protection for central heating systems. It ensures system safety by preventing excessive operating pressure. When the pressure exceeds preset levels, the valve automatically opens to relieve pressure, reducing risks to people and property. It is installed at the highest point of the setup, without the need for additional equipment such as switches or manifolds. Its dual-ported design means it has two connections, one for the inlet and one for the outlet. When the inlet is closed, the flow is interrupted, and when it is open, the flow into the inlet equals the flow out of the outlet.