Product Description

Non pressure solar water heater, vacuum tube with water inside, fast heating , CE, CCC, ISO***1:***0 Model NO. Sbt-zof*5 Tank diameter **0∕**0 mm Inner Tank Materia & Thickness Imported SUS**4 2B Stainless steel ; Outer tank Materia & thickness Galvanized steel∕ stainless steel Bracket material & thickness Galvanized steel Heat insulation layer Materia & thicknessl Imported polyurethane foam *5mm Size of Vacuum Tube *7×***0mm∕*8×***0mm Qty of Vacuum Tube *8∕*0∕*4pcs capacity **0, **0, **5, **0L warranty 3 years for whole system Seperated pressurized S. working principle: The selective coating on the inner cover of the evacuated tubes converts solar energy into heat energy and water in evacuated tubes absorbs the heat. According to temperature rises along with density drops, and weight goes down, hot water will go up to exchange with cold water in tank. In this way, the temperature of the water in tank goes up.