ISO 9001 ,solar keymark.EN12976 .it can resist high temperature and low temperature and flexible ,has good sealing ,high quality

vacuum tube

Three-target all-glass vacuum heat collection tube property and specification :

1) All-glass double-tube co-axial structure,high borosilicate 3.3 glass ;

2) External pipe diameter and thickness:diameter :47mm,Thickness::1.6mm;Length:1500mm;

                                                           diameter :58mm,Thickness:1.6mm;Length:1800mm;

3) Structure: Cu/SS-ALN(H)/SS-ALN(L)/ALN

4) Sediment method: 3 target magnertron sputtering plating ;

5) Vacuum tightness: less than 0.005 Pa.          

it can resist high temperature and low temerature .it has good sealing to ensure the heat not to loss.

it can pretect the dust to go to the water heater to ensure the water clean.               

high quality vacuum tube sealing silicon rubber ring