residential 180L color steel water heater with 55mm thickness polyurethane foam

Low pressure solar water heater: Outer tankstainless steel 0.31-0.55mm thickness antirustInner tankSUS304-2B stainless steel 0.31-0.5mm thickness food grade innocuousInsulationHigh density polyurethane foaming 50-65mm thicknessVacuum tubeborosilicate glass/Three target vacuum tubeΦ 58mm*1800mm(LengthFrame Galvanized steel, 1.2-1.5mm thickness.Angle 25° to 50°Feature:This is a non-pressurized thermosyphon system, solar collector and cylinder storage tank. connected together. there are no need pump to push the fluid circulation between the collector and cylinder storage tank. it is a sample and economic solution to get hot water supply from the sun. the life time is so long and the price is very competitive.Advantage:1.outer tank color steel,best anti-erode material,suitable for acid rain area and bad water quality area.The kind productspecially suitable for southeast Asia,Middle East and Middle and South America.2.Special high quality Insulated materialto reducing theheat loss rate3.High quality heat pipe for efficient heat transferring and long life span of the solar water heater4.UV stabilized high temperature silicon rubber seals and rings5.High density polyurethane foam (40kg/m)6.Can be aotomatic operate completely if connect with intelligent controller7.Can be used a auxiliary electric heater as to provide hot water under without sunshine8.Evacuated tube with SS-CU-ALN/ALN selevtive absorption coating,the life of evacuated tube is 15 years9.Stable aluminumalloy frame/bracket (thickness 2.5mm), well wind resistance10.Simple aluominium alloy frame/bracket can install both on inclined and flat roof11.Optional accessories: intelligent controller ,electric heater,assistant tank magnesium rod12.Heat preservation 72 hours,Hail resistance 25mm