We offer direct thermosiphon solar water heater which is one model best used for household heating. Inner tank: Food Grade Stainless Steel by argon protect welding, supply water quality and drinkable Outer shell: Food Grade Stainless Steel coatedReflect :stailess steel plateHeat insulation layer: 50-60mm import polyurethane integral foaming Frame: Food Grade Stainless Steel coated, both install inclined and flat roof. High Pressure Cold Water In: 6 bar cold water to tank from Feeder or Electric Auto Valve. Automatic Heating Element free All install documents are free
