... , Keymark & CE approval Separated Pressurized Solar Water Heater, split solar water heater, solar water heater, ISO,CCC, Keymark & CE approval1 ... station, circulation pump, expansion vessel, flowing meter, pressure gauge and installation parts 3) Vacuum tube: D47*L1500mm/D58 ... the building perfectlyIntelligent control and automatic operationAntifreeze: no water inside the tubes when it works, it can ...