3-Stage Under Sink Tankless Household Reverse Osmosis System

Tankless China reverse osmosis filtration system ensures constant fresh water.

Removes most contaminants including TDS, heavy metals, bacteria in your tap water.

One-time-use disposable filter cartridge saves your cleaning time and avoid secondary pollution.

2 in 1 compact filter cartridge, save your under-sink space and easy to replace element.

Filter life display and reset, easily check out exactly when to change your filter.

Product Detail

Product Tags

Valuable RO Water Purifier for Home

The 3-stage gradient filtration produces delicious, pure water straight to your kitchen faucet, more convenient and eco-friendly than most bottled water. You could enjoy purer water, crystal clear ice cubes, fresher coffee and better tasting food.

  • Customized Real-time Display
    Customized Real-time Display

    The smart RO water purifier has a real-time display helping you monitor your water quality in a convenient way, such as TDS of filtered water, filter change indicator, etc., a truly smart feature that will help enhance your user experience.

  • Tank-less Design
    Tank-less Design

    This compact reverse osmosis system comes with ultra-thin body and its versatility is thought to adapt to any home style. Unlike most RO units, it features a tankless design and can create an optimal kitchen space for you.

  • Twist and Pull Design
    Twist and Pull Design

    With a simple twist off, the filter replacement of this RO water filter can be done easily without overflow or leakage. You don’t have to turn off the incoming water nor lifting the device like a traditional one.

Easy installation and replacement

This RO water filter comes with disposable twist off style filters, simple enough for you to install and replace filters as you wish. Our bi-directional water stop technology patent specially designed for filter cartridge is a huge help in preventing water coming out from the cartridge, so you don’t have to turn off the incoming water when twisting off it.

Easy installation and replacement

High performance with 3 stages

1st stage: CF includes PP and CB. PP sediment filter (10-15μm) can capture colloid, sediment, rust, large particles and suspended impurities; Carbon block (5-10μm) can remove residual chlorine (≥85%) and COD (≥25%);
2nd stage: RO membrane (0.0001μm) can intercept dissolved solid ions such as heavy metals, and microorganisms such as coliform bacteria. The desalination rate is >95%. We have 75G,400G,500G and 600G to choose from. Both Toray and Dow is available.
3rd stage: Post carbon block (10-15μm) can remove residual chlorine, carbon tetrachloride, methane with removal rate up to 85% in the whole process, and can remove colors, odors and bad taste from water. Antibacterial carbon is optional to inhibit the growth of bacteria.



Item RO3A-75E/M



Flow rate 0.2L/min(75G)



Dimension RO3A       445×130×420mm
RO3B       459×145×420mm
RO3CD   458×140×435mm
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 + scale inhibitor CB)+RO+CB (antibacterial available)
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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