... used flat plate solar water heaterWorking principle:There have three parts of the split pressurized solar water heater system:one is heat-pipe solar collector,the ... water.The characteristic of the split pressurized solar water heater system:1.The heater collector and the water tank is separated, that ... -freeze:-35C6.Capacity:100L,150L,200L,250L,300L,400L,500L flat plate solar water heater