China Custom 4-Stage Filtration System, NSF-Certified Water Filters
The 4 stage filtration system removes impurities and pollutants in the water through multiple filter layers.
- The water is first pre-treated by PP cotton to remove large particles, silt, suspended matter, and other impurities in the water. PP cotton protects the subsequent finer filter membrane and extends the service life of the water purifier.
- Then it passes through the activated carbon layer to remove odors, chlorine, organic compounds, etc..
- Then it passes through the hollow fiber ultrafiltration membrane layer to filter out harmful substances such as bacteria and viruses.
- Finally, it passes through the sintered carbon block to remove the remaining odor again and improve the taste of the water.
how to choose under sink water filter?
The water quality in different regions is different, and the combination of filter elements can also be different. The four filter elements of the four-stage water purifier usually have the following options:
PP cotton filter element (PP) of the water purifier
The PP cotton filter element is one of the most widely used water purifier filter elements. Its function is to intercept large particle impurities, such as suspended matter, silt, rust, etc. in the water. It is also the first-stage filter element of the water purifier.
The characteristic of PP cotton is that the melt-blown filter element is made of hot-melt entanglement polypropylene ultrafine fibers. The fibers randomly form a three-dimensional microporous structure in space, and the pore size is gradient distributed along the flow direction of the filtrate, integrating surface, deep, and fine filtration.
Activated carbon filter element for water purifier(ACF)
Activated carbon filter elements are usually made of coal, sawdust, fruit shells, coconut shells, and other materials. They are made through advanced process equipment, high temperature, compression, sintering, and other steps. It is mainly used to adsorb residual chlorine, discoloration, odor, etc. in water. Used in the second stage of water purifiers.
Generally speaking, the larger the surface area of carbon particles, the stronger the adsorption effect, the higher the filtration accuracy, and the better the filtration effect.
Ultrafiltration membrane (UF) for water purifier
Ultrafiltration membrane filter elements are aimed at: bacteria in water and colloids, rust, suspended matter, silt, macromolecular organic matter, etc. that are much larger than bacteria can be intercepted by ultrafiltration membranes, and are generally used as the main filter element of water purifiers. The filtration accuracy is 0.01μm.
Post-sintered activated carbon filter (CTO)
Post-sintered activated carbon filter (CTO) is the last step in the filtration process. Its main function is to purify water quality and improve the taste of water. Post-activated carbon filters can more thoroughly absorb foreign colors and odors in purified water, adjust the taste of purified water, and inhibit the regeneration of bacteria in purified water, ensuring pure, sweet, and delicious water.
4-stage water filter Technical Parameters
| 4-stage filtration system | |
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| Product Size | 480*120*396mm |
| product information |
Machine head, filter element 1. PP cotton filter element 2. Carbon fiber filter element 3. Ultrafiltration membrane filter element 4. Sintered carbon rod filter element) |
| Waterway Port | The water inlet and outlet ports are both 3/8″, quick-connect |
| Pressure resistance | After being connected to 87psi air pressure for 30 seconds, there should be no deformation or damage, and no leakage at any connection point. |
| Water hammer performance | Can withstand 0-145psi pressure 100,000 times water hammer test without deformation, damage or leakage |
| Burst pressure | Burst pressure ≥ 319psi. When the water pressure rises to 319psi, no damage or leakage should occur |
| Flow performance | When the water inlet pressure is 50psi, the water outlet flow rate is ≥1gpm |
| Life performance | When the residual chlorine concentration of the inlet water is adjusted to 2ppm±10% and the flow rate is 1.0gallon/min, the initial residual chlorine removal rate is ≥95%, the service life is ≥1500gallon (sintered carbon rod filter element), the service life is ≥1500gallon (carbon fiber rod filter element) NSF/ANSI42 standard, the service life is ≥1000gallon (PP cotton filter element), the service life is ≥1500gallon (ultrafiltration membrane filter element) |
| Health and Safety | Comply with NSF/ANSI42 standards |
| Applicable water temperature/pressure | 5～38℃/10～100psi |
| Water output per minute | 2-4L/minute |
| Filter life | Pre Filter 6months; Other filter elements 12months |
| Function | Effectively filter bacteria, heavy metals, sediment, residual chlorine, and other impurities in the water to improve the taste |
| Packaging | Size: 50*14.5*43.5mm, Gross weight: 7.4KG |
| Certification | WRAS, WATERMARK, NSF |
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