Heat pipe solar collector 1) reliable and efficient twin-glass solar tubes; 2) copper heat pipes for rapid heat transfer; 3) easy plug-in installation; 4) free maintenance; 5) suitable for mains pressure water (up to 8 bar/116psi); 6) corrosion resistant silver brazed copper header; 7) aluminum frame; 8) powder coated (black, brown or silver) aluminum casing; 9) stable solar conversion during the day; 10) the perfect solar collector for domestic solar water heater systems; 11) ideal for commercial solar water heating applications.