Description : Watermakers designed for boats where availability of energy is very limited. Entirely automatic operation, simple and silent. For onboard installation only. Two versions: - ETW : Eco-Twin automatic version (with automatic salinometer, automatic waste valve, automatic flushing) - ETB : Eco-Twin basic version All are battery powered, including - Low pressure seawater feed pump - Pressure booster - High rejection rate membrane - 5 & 20 micron filters - Pressure gauge and pressure safety devices