Pressure safety valves are designed to reduce sudden pressure increases in hermetic transformers.
These valves are installed on the tank cover and are pre-set to open in the event of internal overpressure. By releasing excess oil, they help maintain a stable internal pressure and protect the tank from potential damage.

Pressure safety valves can be manufactured with various connection sizes, including G1", G1 1/2", and G2", and can be set to different pressure levels based on specific requirements.