vacuum tube solar heater

Vacuum tube solar heater (YuanMeng series , CE certificate) Outer tank: colourful steel or galvanized steel or SUS304-2B stainless steel Inner tank: SUS304-2B food-grade stainless steel thickness:0.4-0.8mm Sealing Ring: Excellenrt Silica gel material. life is twice longer than common Silica gel. Cap of water tanks: aluminium-alloy thickness≥1.0 Vacuum tuber: High-efficient vacuum tube High-Efficient heat-collection function: New generation o vacuum tubes, use molecular nanotechnology, greatly enhance heat-absorption by 20 percent, higher water temperatures. Adopts the international advanced film-coating technology, solar thermal conversion rates extremely high, absorbing heat even if the cloud weather. Vacuum tube strictly choose high-borosilicate glass 3.3 so that it has low coefficient of thermal expansion and higher intensity. Hail-resistance:25mm Insulation: 55mm polyurethane keep heating do with aging the cell is small and uniform reasonable density excellent insulation Frame: thicker galvanized steel , Anti-corrosive.and Anti-ultraviolet, installed in the slope and flat place freely.Strengthen hail-resistance. Best angle for the winter :45 degree.Through oxidation process.It increase wind resistance.,life is longer than common frame. Beautiful appearance. Automatic operation: Digital controller shows water temperature and water lever,water loading automatically ,heating automatically ,controlling automatically. Model Numbers of vacuum tubeStorage capacityØ420-1.5m/Ø4718100201112413330166Ø470-1.5m/Ø4718139201502417930226Ø470-1.8m/Ø5818150201652420030250 Specifications Vacuum tubeOuter tankFrameØ420-(ø47)1.5mColourful steel or galvanized steelgalvanized steelØ470-(ø47)1.5mColourful steel or galvanized steelgalvanized steelØ470-(ø58)1.8mColourful steel or galvanized steelgalvanized steel