Non-pressure solar heater

All-glass double vacuum tubes solar heater, has excellent advantage of common glass vacuum tube and metal sealing-in vacuum tube. It's a new style all-glass evacuated solar collector tubes, which gives full play to feature of "vacuum tube gathers a hot tube ". Name: Solar heater with double glass vacuum tubes Model: KG58S-24 solar heater Features: 1) Vacuum tube:Double glass vacuum tubes,47x1500mm or 58x1800mm 2) Inner tank material:Stainless steel 304 2B food grade 3) Outer tank material: Aluminum galvanized or Stainless steel 4) Outer tank dia.420mm or 460mm . 5) Frame material: Aluminum galvanized or Stainless steel 6) Insulation:50mm polyurethane total forming with pressure and best density 40kgs/m3 7) Available sizes:15,18,20,22,24,28,30,36 tubes with capacity from 100L to 420LDouble glass vacuum tubes solar heater function: (1)fast start-up and response, it passes heat to water tank quickly. It can collect solar heat even in cloudy day. (2)It obtains high solar heat. (3)Hermetic seal in inner pipe. It can withstand high pressure. It can connect with system of tap water. (4)Water doesn't run in inner of double vacuum hot tube. (5)It stands against freeze weather. (6)it keeps warm for 24 hours. (7)Available size: 47mmX1500mm, 58mmX1800mm