non pressure solar water heater

Thickness of bracket: alunimum alloy/colored steel

Vacuum tube:   58 x1800 mm                                              

Inner tank:    stainless steel ,food grade

Outer tank:   stainless steel                                                                                                                

Insulating layer thickness:  50-55 mm

Tank diameter:  480 mm

Pressure:0Pa

Heat preservation:  72 hrs

Hail resistance:  25 mm