... , the water in the tank is gradually heatedHeat pipe solar collector technical specificatonManifold casing material: aluminumFrame material:aluminumHeader pipe ... roof/inclined roofMounting angle:15-50CInlet:3/4"E Solar collector(Heat pipe series)SC-H seriesModelSC-H-15- ... ,4Mpa,welding pressure 4MpaDust Ring GasketSilicon Rubber Vacuum Tubetri-element tube,High boron and silicon content 3.3,Structure, ...