Safety valves are designed to be installed in commercial or industrial refrigeration and air conditioning systems, on elements like: evaporators, condensers, volumetric compressors, liquid receiver tanks, liquid accumulator tanks, heat exchangers, oil separators, and pipelines. The main function of a safety valve is to protect the above listed equipment from any overpressure, above the operating conditions for which they have been designed, in respect of the standard EN 378-2:2016 and Directive 209/105/EC.

Unbalanced conventional direct load safety valves open when the thrust on the plunger exerted by the fluid under pressure, under calibrated conditions, overcomes the opposing force of the spring acting on the plunger. Each safety valve is identified with an alphanumerical serial number and a model number consisting of an alphanumerical code that indicates the family of the valve, the connection type, and the calibration pressure in bar.

Safety valves are always accompanied by a declaration of conformity to the reference directive, which explicitly indicates the emission data, and the calibration certificate.