... -CU-SS-N/AL-58-1800 2.Inner tank:SUS304-2B,1.2mm3.Outer tank: drawbench silver steel,0.4mm4.Frame: coated ... .5mm5.Insulation:polyurethane,55mm Remark 1.Storage tank diameter(mm):360/470 2.Electric heater connection(inch):13.Thickness,insulation(mm):554 ... (Pa):1.0MPa8.Operating fluid pressure(Pa):0.4MPa split pressurized solar water heater (with SRCC,EN12975,Solar keymark,CSA,F378 Certificate)