AGA Certificate 6162121K Series 2/2 Direct Acting Disc-On-Seat Solenoid Valve1/4" BSP 121K01 - Max Working Pressure : 200-500 kPa3/8" BSP 121K3306 - Max Working Pressure: 110-300 kPa1/2" BSP E121K45 - Max Working Pressure : 30-70 kPa1/2" BSP E121K46 - Max Working Pressure: 50-120 kPaRefer to data sheet for more information