... profile solar water heater: high efficieny, low heat loss, low cost, reliable quality, good finish, food class SUS 304 aluminium profile solar collector: high ... quality with valuable priceMaximum working pressure: 1.0MPa Pressure-bearing operation, no water flows in vacuum tube, so water ... life will be not less than 15 years Area of collector: 2.03m .Aperture area: 1.84m2 Cu-Al ...