The Caleffi safety valve is ideal for use in boilers, providing reliable protection against the harmful effects of excessive pressure in the heating system. Strategically positioned at the highest point of the installation, it operates without the need for any switch or valve, ensuring maximum safety. When the system pressure exceeds a set value, the valve opens automatically to relieve pressure and protect both people and equipment from potential hazards.

This two-way valve has two ports: one for the medium inlet and one for the outlet. When the inlet port is closed, the flow is shut off; when it is open, the outlet flow is equal to the inlet flow.