... CE,ISO 3.Deliver time:Within 3days 4.Manufacturer solar glass pipe DescriptionVacuum tube58-1800mm co-axial structure high borosilicate 3. ... ,The electromagnetism or ball valve can perform the water supply automatically,the water in the tank is not sufficient ,the electromagnetism ... ,the tap water flow in the tank ,if the water is full,it will close the valve automatically solar glass pipe for solar ...