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The Caleffi 252151 safety valve is ideal for use on boilers, providing reliable protection against overpressure. It is installed in central heating systems and opens automatically when the pressure exceeds the preset value, preventing serious risks to the installation and those around it. It is a two-way valve, meaning it has two ports: one for the inlet of the medium and one for the outlet. This way, when the inlet closes, the flow stops, while when open, the outlet flow directly corresponds to the inlet flow. It is installed at the highest point of the system, without the need for additional switches or valves.
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