... 2. easy installation 3. CE ISO certificate Seperated pressurized solar system Features: 1) inner tank: stainless steel thickness 1.50 ... temperature and tank temperature gets to the set value,he circulation system will start work. It will transmit the solar energy ... borrosilicate glass 3.3 7) Solar working station: Controller, Circulation pump, expansion tank 5L-8L, manometer,flow-meter, pressure relief ...