All glass tube non pressure solar water heaters characters:
1. Stable, reliable solution, easy installation and scientific structure, elegant, natural and beautiful.
2. Solar Vacuum Tube made from hard borosilicate glass with unique coated layer, high efficient with twin-glass solar tubes.
3. Water tanks are all made by machine. Inner water tank is made of SUS 304 2B food grade stainless steel, welded by argon arc. Water is pure and drinkable
4. Heat insulation layer: 50mm polyurethane integral foaming, superior heat preservation, keep water hot for 72 hours.
5. Between vacuum tubes and inner water tank, we adopt silicon rings to connect and seal them.
6. System is automatic to fill in cold water.
7. High solar-thermal conversion and low heat loss
8. Auxiliary electric booster 1500W is optional, ensure 24 hours hot water.