... collector separates with water tank, combining with the building perfectlyThe tank loses less energy than the normal onethe ... Work station1,Expansion tank 5L, 8L, 12L, 24L (Made in Italy) 2,Check valve 3,Circulation pump 4,Intelligent controller 5 ... Pressure guage 6,Safety valve 7,Flow meter(Made in Switzerland)ModelTank CapacityVacuum tube specificationExpansion tank capacityLoading20’/40’/ ...