The safety valve from Watts is ideal for use in boilers, providing protection for central heating systems from excessive pressure. When the pressure in the system exceeds a predetermined value, the valve automatically opens, allowing the system to decompress, which is essential for the safety of people and materials. Its operation is critical, as increased pressure can cause serious hazards. This particular valve is two-way, featuring two ports: one for the inlet and one for the outlet. When the inlet port is closed, flow is interrupted, while when it is open, the inlet flow equals the outlet flow. Installing it at the highest point of the installation allows for effective operation without the need for an intervening switch or valve.