1.solar water heater 2.Test pressure:9 bar 3.Insulation:Polyurethane 55mm or ... Solar Collector,heat pipe solar collector,solar collector,solar water heater,heat pipe collector,collecror,Solar Collector,solar collectors,solar collector ... water heaters,solar panelTechnology Specifications MODELLigthing(m2)Heat pipe(mm)Supply hot water(L/°c)20/40"containerGWKGdiameterlengthNoSPHPC 47/121.26 ...