1.solar water heater 2.Test pressure:9 bar 3.Insulation:Polyurethane 55mm ... Pipe Solar Collector,heat pipe solar collector,solar collector,solar water heater,heat pipe collector,collecror,Solar Collector,solar collectors,solar collector ... panelTechnology Specifications MODELLigthing(m2)Heat pipe(mm)Supply hot water(L/°c)20/40"containerGWKGdiameterlengthNoSPHPC 47/121.26Φ4715001270/60133/27628SPHPC 47 ...