Features: 1) . Vacuum tube: Pyrex glass, magnetron sputtering aluminum nitride coating. We have two models: common tube; 3. 3 high boron silicon glass tube2) . Vacuum tube standards: 15 / 18 / 20 / 24 / 30 / 36 tubes with 47mm (diameter) and 1. 5m length / 58mm (dia) and 1. 8m (length) 3) . Material of inner tank: SUS304-2B stainless steel with 0. 4 mm thickness4) . Material of outer tank: SUS304-2B stainless steel with 0. 4 mm thickness5) . Insulation layer: improved polyurethane integral foaming with 60mm thickness, superior heat preservation6) . Material of bracket: High quality stainless steel7) . Water tank (diameter) : 420mm8) . Pattern of water tank: Inflow side9) . Heat preservation: 72 hours10) . Hail resistance: 20-30mm11) . Standard pressure: 0. 6 MPa12) . Fastness: stainless steel screws13) . Seal: silicone rubber polymer14) . Temperature heat: 45-95 degree Celsius15) . Reflect: 45 angles
Solar Water Heater (Normal Series)