pressure solar water heater The crust uses aluminum alloy mould material of high strength with airflow design. pressure solar water heaterWater Tank:1,Inner tank ... high strength with airflow design.4,It is furnished in good style .5,Tank is equipped with electric water heater ... WILORS15/6,three phases,220V/50Hz(German)3,Probe:Pressure&Temperature Probe &Check valve4,Temperature sensor:Three temperature ...