... ball valve DN20, 12VDC, 2 way, brass, with manual switch. Application:1.HVAC 2.Water treatment 3.Chemical process 4.Small equipment ... second*Wire type: CR01 1.Connecting SW and OPEN, the valve opens, getting the position, automatically power off, the valve remain ... SW and CLOSE, the valve close, getting the position, automatically power off, the valve remains side passes position (fully closed) ...