200 Liter Capacity System Capacity (L) 200 -Inner tank material: food grade SUS 304-2B stainless steel. -Inner tank dimensions: 360mm, T1.2mm. -Outer tank material: thick colored steel. -Tank outer diameter: 470mm, T0.55mm. -Tank insulation layer: 50mm high density polyurethane foam. -Foam density: minimum 42 kg/m3. -Heat preservation: 96 hours. -Coil material: 12*T1.0mm copper coil. -Inlet and outlet pipe: G 3/4" male screw, SUS 304-2B stainless steel, 2.5mm thick. -Tank welding: argon arc welding. Solar collector -Vacuum tubes: selective coating SS-C/CU, 58X1800mm glass tube, 1.6mm thick. -Insulation: high density polyurethane foam, T35mm and aluminum silicate, T25mm. -Outer cover material and thickness: aluminum alloy, T1.8mm. -Tube diameter and thickness: 35mm, T1mm. -Heat pipe material and thickness: TU1 purified copper, T0.6mm. -Support material and thickness: flexibility for flat or sloped roof. -Pipe caliber: 22mm. -Gasket: high quality silicone rubber polymer. Workstation -Pump GRUNDFOS circulation: low noise, high efficiency, long operating time. -Flow meter: Regulates the circulation medium flow. -Intelligent control: The SR881 controller controls the entire system automatically and intelligently. -Expansion vessel: Regulates the system working pressure when the medium expands due to heat. -Safety valve: Stable working pressure at 0.6Mpa, to ensure the safety of the system. -Other accessories: Pressure gauge, flexible stainless steel pipe for connection to the expansion vessel. -Length of two coils (m): 30.