Microsolar Coaxial Multivalve WORLD'S HIGHEST EFFICIENCY THERMOSYPHON SOLAR HEATER (USA, EU & Australia NZ Patented) » Stainless Steel Slimline Tank 290mm high only » 10 Coaxial Vacuum Multivalves, Frost Free at Neg 32C, no chemicals » Individual Flexible Opening Bottom Tube Holder - for differential thermal movement of each glass heating tube » Indirect Heating with Pressurised Copper/SS Heat Exchanger sediment resistant design » Fastest Heating Thermosyphon solar heater in the world 100C max temperature, no electricity
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