The safety valve from Caleffi is ideal for use on boilers, providing protection against excessive pressure in the central heating system. Under pressure, it automatically opens to relieve the system, thus preventing significant risks to people and property. Installed at the highest point of the installation, it operates without the need for a switch or valve, ensuring the safety of the setup.

The dual design features two ports, one for the inlet of the medium and one for the outlet. This means that when the inlet port is closed, flow stops, while when it is open, flow in the system remains steady and balanced at the outlet.