... 4. LED dynamic color display screen, bright and visual5. Single tank control valve, no water discharge when regeneration6. Double operate timing mode ... external connect with high-pressure pump, solenoid valves. Main parameter1. Base: 2-1/2-8NPSM2. Inlet/outlet: 3/4 F3. Outfall ... water filter, RO and UF membrane housing, RO system, Accessories(valve, distributor, tank head, etc.) We have 7 years OEM ...