... , Western EuropeProduct DescriptionNon-pressure solar water heaterWorking Principle:Compact Non-pressure Solar Water Heater relies on desity of the water, cold water down, hot water up, a cosmical physics ... : 1.2mm/ 1.5mm thickness stainless steel or galvanized steel plate or alumminum alloy.6. Angle of bracket: 0°,25°, 38 ...