... header, via intermittent pump cycling.Heat Pipe Solar Collector features: JINENG SOLAR Solar Collector Specification:Type:Vacuum Solar CollectorVacuum Tube:Borosilicate 3.3, ALN ... °CHot Temp Resistence260°CLife15 YearsCertificate:CE, Solar Keymark, EN12975, CCC, ISO9001:2000Appliance:Domestic Hot Water Heating, Pool Heating,Radiant Infloor Heating, Air ...