UNE 60402-2
Pressure regulators for gas receiving installations with an inlet MOP up to 0,4 bar and an outlet MOP up to 0,15 bar. Part 2: Regulators for the second family gases, with an inlet MOP between 150 and 400 mbar and an outlet MOP up to 0,15 bar, with a low pressure cut-off safety valve, a high pressure cut-off safety valve and a relief valve for excess outlet pressure and with an equivalent flow rate up to 4,8 m3 (n)/h of air.