motorized ball valve 12V, DN20, with manual switch, 2 way, electrical valve,brass Description:This ... valve DN20, 12VDC, 2 way, brass, with manual switch. Application:1.HVAC 2.Water treatment 3.Chemical process ... most suitable for heavy dirt and long time no action.3).The conditions that solenoid valve can not be ... closed) motorized ball valve 12V, DN20, with manual switch, 2 way, electrical valve,brass