... motorized ball valve 12V, DN20, with manual switch, 2 way, electrical valve,brass Description:This listing includes ... DN20, 12VDC, 2 way, brass, with manual switch. Application:1.HVAC 2.Water treatment 3.Chemical process 4.Small ... for heavy dirt and long time no action.3).The conditions that solenoid valve can not be ... motorized ball valve 12V, DN20, with manual switch, 2 way, electrical valve,brass