The Caleffi safety valve is a reliable choice for use in boilers. It is designed to protect the central heating system from excessive pressure, ensuring that the operating process remains safe. When the pressure exceeds a specific value, the valve automatically opens, allowing the system to decompress and thereby reducing risks to people and materials. It is installed at the highest point of the installation and operates without the need for any switch or valve. It is a two-way valve, meaning it has two ports: one for the medium's inlet and one for the outlet. This allows precise control of the medium's flow, stopping the flow when the inlet is closed and maintaining the flow ratio between inlet and outlet when open.