1. Heat pipe solar collector 2. SRCC, CSA, Solar Keymark, AS/NZS 2712 certified 3. Continuously improve design Product Descriptionheat pipe solar collector, solar water heater, solar collector, evacuated tube & heat pipe, solar renewable energyApricus ... , DIN: ECu-58); Potable water rated.Brazing rod: BAg45CuZn Maximum pressure: 800kPaConnection Options: 7/8” OD copper (US size), 19.1mm ...