... -40 degree 3.OEM provide Separated pressurized heat pipe solar collector with boiler1,Size:58/1800,47/1500 2,CE,SRCC ... ,Solar keymark 3,Lifetime:15 years 4,Delivery date:7- ... swimming pool heat system. Heat Pipe Solar Collector Detailed SpecificationItemPartsDescriptionManifold boxManifold Outer Case1001 Aluminum alloy with plastic spraying; thickness: 2.0mm; ...