4 Stage Water Purifier with RO Membrane & Booster Pump | Under-Sink System
4 Stage Water Purifier uses advanced RO Membrane Technology to remove dissolved molecular contaminants from tap water, this is the same technology used by most bottled water companies, the filtered water is pure water.
4 Stage water Purifier Technical Parameters
| 4-stage water filter with booster pump | |
| Product Size | 225*197*390mm |
| product information |
Machine head filter element 1. PP cotton filter element 2. Front carbon fiber filter element 3. NANO filter element 4. Rear taste CTO filter element |
| Waterway Port | The water inlet and outlet ports are both 2/8″ quick-connect |
| Pressure resistance | After being connected to 43psi air pressure for 30 seconds, there should be no deformation or damage, and no leakage at any connection point. |
| Water hammer performance | After trial installation, it can withstand 100,000 water hammer tests at a pressure of 0.15-0.4 MPa without any deformation, damage or leakage. |
| Burst pressure | Filter bottle bursting pressure ≥28KG |
| Flow performance | 0.15-0.4mpa Water outlet flow ≥1.4L/min |
| Life performance | Different water quality: Under the condition of flow rate 1.4L/min, PP cotton: 3-6 months, front carbon fiber filter: 6-12 months, rear taste filter: 6-12 months, NANO filter element: 12-24 months |
| Health and Safety | Comply with NSF/ANSI42 standards |
| Applicable water temperature/pressure | 5～38℃/0.15-0.4mpa |
| Water output per minute | 2-4L/minute |
| Recommended filter replacement cycle | Pre Filter 6months; Other filter elements 12months |
| Function | Effectively filter bacteria, heavy metals, sediment, disinfection by-products, residual chlorine and other impurities in the water to improve the taste |
| Packaging | Size: 260*245*460mm Gross weight: 6.5KG |
| Certification | WRAS, WATERMARK, NSF |
How the 4-Stage Filtration Works
PP Cotton Filter (Stage 1)
Traps large particles (1–5 microns) such as rust, silt, and sand. Protects the life of the following filters.
Carbon Fiber Filter (Stage 2)
Uses high-quality granular activated carbon to absorb chlorine, chemicals, and odors, enhancing taste and reducing health risks.
NANO Filter (Stage 3)
Filters out bacteria, viruses, heavy metals, and microscopic particles. Maintains beneficial minerals. Works under 3.5–30 bar, so a booster pump is included for stable operation.
Optional Upgrade: Replace with an RO membrane for ultra-purified, bottled-quality drinking water.
CTO Post-Carbon Filter (Stage 4)
Finishes the purification process by removing residual odors, chlorine, and improving overall water taste using coconut shell carbon.
Why Choose This 4-Stage Water Purifier?
- Advanced RO/NANO Membrane Technology for maximum purity
- Built-in Booster Pump ensures strong flow in low-pressure environments
- Compact Under-Sink Design saves kitchen space
- Quick-Connect Fittings make DIY installation simple
- Certified Safe: NSF, WRAS, WATERMARK compliant
- Customizable: OEM/ODM available for distributors & brands
Whether for a home kitchen, small office, or commercial setting, this water purifier delivers consistent quality you can trust.
Smart Water Technology – Trusted Water Purifier Manufacturer in China
Xiamen Smart Water Technology Co., Ltd. is a leading Chinese manufacturer of premium water purifiers and under-sink filtration systems. We are the OEM behind several top international brands and export to markets worldwide. All products are produced in ISO9001-certified facilities with full compliance to CE, ROHS, NSF, and other global standards.
Looking to customize your own brand of water purifiers or filters?
We offer full OEM/ODM services and welcome global partnerships.
Contact us today to get a quote or product catalog
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