... 400L 1.5mm2,Insulation: 50mm polyurethane foam.3,Outer tank:0.5mm thickness galvanized steel material4,P/T relief valve,electrical heater ... Circulation pump:WILO RS15/6,three phases,220V/50HZ(German)3,Probe:Pressure&Temperature Probe&Check valve4,Temperature sensor:Three ... bar stick to prevent furring.7,The insulating layer uses polyurethane bulk bubble.8,It successfully carries out installation of ...