The Caleffi 519700 safety valve is ideal for use on boilers, providing protection to the central heating system from dangerous overpressure situations. This valve plays a vital role by preventing serious risks to people and equipment, opening automatically when pressures exceed a preset value. It is installed at the top of the system to ensure effective operation.

It is a two-way valve, which means it has two ports: one for the inlet of the medium and one for the outlet, allowing smooth liquid flow. When the inlet port is closed, flow is interrupted, whereas when it is open, flow remains steady at the outlet.