1.SABS,ONNCCE,CoC ,CGC,CE,ISO9001,ISO14001,ISO18001 approved
2.Three years warranty
3. 7 to 15 days delivery time

Material of vacuum tube:single-target tubes

Inner tank:SUS304-2B food grade stainless steel

Outer tank:stainless steel

Heat insulating layer:imported polyurethane

Frame:galvanized steel, ant oxidation

Inner tank:1.2mm

Outer tank:0.4mm

The thickness of heat insulating layer:50mm

Frame:1.5 mm

Pressure:0.6Mpa

Heat preservation:72hours

Hail resistance:25mm

Warranty:

solar water heater:3 years

Vacuum tube: 5 years

Working temperance: 90Celsius degree

Cold resistance: -30Celsius degree

Working principle:
The selective coating on the inner cover of the evacuated tubes converts solar energy into heat energy and transfers heat to the heat pipes by aluminum fins, the liquid in the heat pipe changes into vapour which rises to the condenser. The heat then passes through the heat exchanger and the vapour becomes liquid, returning to the base of the heat pipe. The heat conducts to the heat transfer liquid(ante-freezing liquid or water) via a copper pipe. This transference of heat into the liquid creates a continuous circulation as long as the collector is heated by the sun.