solar energy water heater P/T relief valve , electrical heater element with terminator solar energy water heater Separate Pressurized Solar Water HeaterWater Tank:1,Inner tank:SUS304-2B material,150L-200L1. ... /T relief valve ,electrical heater element with terminator5,Heat exchanger:20m long,12mm diameter,1mm thickness coppper pipe.Feature:1,Pipeline is made ...