
Heat Pipe Solar Hot Water Heater. Leak-Proof Design: No sealing rubber needed; water remains in tank even if vacuum tube breaks. High Pressure Resistance: Test pressure up to 11 bar; normal working pressure 7 bar for safety. Anti-Freeze Technology: Heat pipe structure ensures no water in tubes, preventing freezing damage. Premium Tank Material: Inner tank made of 304/316L stainless steel or porcelain enamel for durability. Multi-Certification: Certified by CE, ISO9001, and CCC for quality and safety standards. Easy Installation: Plug-in installation design simplifies setup and reduces labor costs. Long Warranty: 8-year warranty coverage for peace of mind and reliable performance. High Efficiency: Heat Pipe Plus Vacuum Tube structure maximizes solar energy absorption.