KEYMARK,CE Solar Thermal Collector SC-C01 Separate Pressurized Solar CollectorThe pipeline is made of red copper and conducted by ... design. It is furnished in good style.Can endure high pressure when it works.Module design, optional combination, which can meet ... preservation: 72hrs 5, Hail resistance: 25mm 6, max pressure: 10 bar 7, working pressure: 6 bar8, Coating of vacuum tube: SS-C ...