... . The controlling machine is made of stainless steel. All water water pipes is PVC material.2.Specification ModelRO-1000I (15000L/H ... RO membrane manual wash with medicine3, Pure water high water level auto stop, low water level auto start4, Multi-phases pump protected ... low energy consumption, nonpollution, etc, so, it is widely used for producing pure water.More details,please contact us today!