... of stainless steel. All water water pipes is PVC material.2.Specification ModelRO-1000I (15000L/H)Capacity of pure water15000L/H ... RO membrane manual wash with medicine3, Pure water high water level auto stop, low water level auto start4, Multi-phases pump protected ... soluble substances can be removed,but allow water moleculepass through. 7,It is simple, low energy consumption, nonpollution, etc, so, ...