... , switch and valve systems8. Built-in soft-start system to avoid damage to the expensive membrane when starting9. ... 160Multi-stage pump second stageChina Nanfang CDLS4-140Reverse Osmosis System RO water systemMembraneU.S. HYDRANAUTIC ultra-low pressure 4040 ... TDS metre, pressure metre, electromagnetic valve, etc.OptionalLChemical dosing System for PH adjustment, anti-scaling, etc.U.S. Pulsafeeder Xo60 ...