Pressure : 25kg / cm2g Maximum Working Temperature : 120 °C Use : Gas 1/2" 3/4” 1” DN 15 20 25 A 52 58 64 B 28 35 41 C 35 38 44 D 52 52 52 E 14 19 22 F 14 14 16 AF 23.5 29.5 36.5