3-Stage Under Sink Tankless Reverse Osmosis Filter For Home

Multi-Stage composite filter & Effective Filtration Performance: Adopting compound technology to achieve a 2-in-1 multi-function filter, achieves filtration precision at 0.0001 microns, and effectively removes most contaminants such as TDS, heavy metals, bacteria, and odor in your tap water.

Space saving & Easy replacement: Tankless design and compact filter cartridge can save your under-sink space and are easy to replace.

TDS Display & filter lifespan indicator: Built in LED light will notify you of real-time TDS value and remind you to replace filters when necessary

Safe & Clean: Food-grade plastic material ensures pure and uncontaminated drinking water. A disposable filter cartridge for one-time use will save you time and prevent secondary pollution.

Product Detail

Product Tags

Best RO Water Purifier for Home

Equipped with 3-stage gradient filtration, this RO water system connects directly to your primary kitchen faucet. You can enjoy purer water, crystal clear ice cubes, fresh coffee, and better-tasting food, which is more convenient and eco-friendly than most bottled water.

  • Optional Real-time Display
    Optional Real-time Display

    The smart feature helps your user efficiently monitor water quality and filter lifespan in real time.

  • Tank-less Design
    Tank-less Design

    Featuring a tankless design, it can create more space under the sink, effectively avoids secondary pollution, and reduces noise.

  • Twist and Pull Design
    Twist and Pull Design

    With a twist-and-pull design, you can easily replace the filter element without turning off incoming water or lifting the device, and no overflow or leakage could happen.

Easy installation and replacement

· Using disposable filters, it is easy to install and replace filters as you need. · Bi-directional water stop technology patent specially designed for filter cartridges is a great help in avoiding water coming out of the filter cartridge, so you don't need to turn off the incoming water when twisting it off.

Easy installation and replacement

High Performance Filtration

Stage 1 (CF consists of PP & CB): PP sediment filter (10-15μm) blocks and reduces colloid, sediment, rust, large particles, and suspended impurities; Carbon block (5-10μm) removes residual chlorine (≥85%) and COD (≥25%);
Stage 2 (RO): RO membrane (0.0001μm) can get rid of dissolved solid ions such as heavy metals, and microorganisms such as coliform bacteria. The desalination rate is >95%. 4 models of 75G,400G,500G, and 600G for you to choose from. Both Toray and Dow are available.
Stage 3 (CB): Post carbon block (10-15μm) can remove residual chlorine, carbon tetrachloride, methane, colors, and odors with a removal rate of up to 85% in the whole process, further polish purified water and balanced pH with minerals add back, which brings you odorless and refreshing water. Optional Antibacterial carbon can inhibit the growth of bacteria.






Flow rate




RO3A: 130×445×420mm



Applied feed water

Municipal tap water

Working temperature 5-38℃
Working pressure 0.1-0.4Mpa
Connection Inlet: 3/8″PE tube;purified water and waste water: 1/4″PE tube
Filter media CF(PP+CB)+RO+CB
Features – E (economic version) Filter lifetime display and reset; overtime protection; ordinary faucet
Features – M (mid-end version) Filter lifetime display and reset; overtime protection; smart faucet; TDS display; water leakage protection; smart flushing; holiday mode

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