... solar water heater 2.food-graded Galvanized steel 3.more cleaning water 4.low corossion copper coil solar water heaterContain main parts: Solar Collector, Pump Station and Water ... sunshine hot water can also be used.5.Can be combined with gas or electric heater.6.Max. Pressure: 12bar; Operating Pressure: 6 bar ... .Capacity:100L,150L,200L,250L,300L,400L,500L copper coil solar water heater