Pressurized tank Solar keymark --en12976 certificate With high pressure resistant design, the water tank adopts the water tank adopts sus304-2b or sus316l stainless steel, and special welding technology. Its thickness is 1.2mm - 2.0mm. And directly connected to pressurized water supply is permitted. The pressure resistance capability is 6 bar, if the data exceeds, the exclusively-used p/t valve will bereleased. The p/t valve, with the brand name caleffi, is qualified to en1115. Qualified to tuv safety standardization, the water tank has dual insulation functions. The temperature controller adopts american "therm o-drsc" one, qualifying to vde standardization. The super long and big magnesium stick can protect the tank free of scale. The long enough exchange copper tube(14) assures very high exchange efficiency in solar system. The outlet of copper adopts special copper, good in sealing performomce and easy to install. Product model200l300l400l We have solar keymark --en12976 certificate Whole packaging