Solar water heater. Solar heaters, solar energy water heater, Solar Heaters Model: SPECIFICATION: 1. Material of Inner Tank: ... heat storage tank, 2. When using the hot water, the cold water flows through the inlet, the copper coil absorb ... absorb the temperature, at last the water can be used.DescriptionPre-heated Pressurized Solar Water HeaterMaterial of out tankGalvanized SteelMaterial of inner ...