... 4.50mm insulation Brief introduction:Usually,a set of solar water heater includes solar collector,solar water tank,installation bracket,working station,adaptor,expansion tank & ... pumps, valves, and controllers to move fluid through the system. Active solar water heater systems have the potential to be more efficient, but ... 2-500/10.0/0.6-12000*1000*80/10010M2500L Solar system water heater with SRCC&CE ...