... , RO water filter, Automatic RO Membrance, Multi-stage pump protected. RO water system, RO water fitler ... membrane: CPA2 4040 8 pieces (single grade)Multi-stage pump: CDL4-220/4.0kW 1 itemPre-filter: ... membranes filter: Φ90 x 1000 5 itemsBooster pump: BLC70/0.75kW 1 itemQuartz sand: 250kgActivated ... auto stop,low water level auto start,Multi-stage pump protected without water,protected when no power ...