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 ... kinds of requirements.2).Float ball design, no leak, most suitable for heavy dirt and long time no action. ... ) motorized ball valve 12V, DN20, with manual switch, 2 way, electrical valve,brass