Flexx Oxi-Gen Aeration Iron And Sulfur Filter By US Water Systems

List Price $3,555.90 Factory Direct Price $2,370.60 Sale Price $1,975.50
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The Flexx OXi-Gen Superfilter never has any air in contact with the control. Instead of being mounted on the top of the tank, the control valve is mounted on the side of the tank and the air is introduced directly into the media where the oxidation occurs. It is very simple -but not many do it the right way. We do!

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Simply A Revolution In Iron And Sulfur Eradication - Uses The Air We Breathe To Clean Your Water




Up to 8 ppm

Hydrogen Sulfide

Up to 5 ppm


Up to .7 ppm

pH Levels

Works effectively from pH levels of 6.5 to 7.4

All NSF Approved Components

Revolutionary Features Lead to Awesome Benefits

  • Natural Oxidation - Air is injected into the top of the tank converting ferrous iron to ferric iron and oxidizing sulfur after untreated water has passed through the control valve preventing the control valve from fouling with iron and/or iron. The Sludge that forms in most Air Injection Systems is simply gone and the iron and sulfur is eradicated with ease.
  • Total System Control - Legacy View Smartphone App and meter control give you total and advanced control over system regeneration, efficiency and ease of operation. All it takes is 30 seconds to program the Flexx Oxi-Gen. Fully Adjustable cycle times.
  • Eco-Friendly - No other iron or sulfur filter uses as little water as the Flexx OXi-Gen Superfilter. Other filters have to backwash every night to recharge the free air in the top of the tank. The Oxi-Gens unique design enables it to draw air into the system at anytime (to replenish the oxygen) without a full backwash, potentially saving thousands even tens of thousands of gallons of water a year.
  • Back Up Protection - Simple 9 volt battery back-up keeps electronic motor active and will return the control valve to service position in case of power failure during regeneration.
  • Built-In Meter - Electronic meter provides water usage history, number of regenerations, flow rates, and historical usage.
  • No Rattling or Banging - The control valve slowly releases compressed air charge prior to backwash cycle eliminating the explosive blast that can dislodge the drain line.


NSF Approved Components

The US Water Flexx Oxi-Gen Superfilter is a fully automatic backwashing filtration system. It uses all NSF and FDA approved components, including the Catalytic Carbon & Katalox filter media, which is Tested and Certified by the WQA to NSF/ANSI 61.



  • Iron Removal - Up to 8 ppm
  • Sulfur Removal - Up to 6 ppm
  • Manganese Removal - Up to .5 ppm
  • Works effectively from pH levels of 6 to 9
  • Not recommended for Iron Reducing Bacteria (IRB) or Sulfur Reducing Bacteria (SRB)




Stay Connected to Your Water

Our smart valve system integrates directly with your smartphone via Bluetooth 5.0. Simply download the free Legacy View companion app, pair the devices, and you'll have access to a real-time dashboard and settings.

The application allows you to adjust the system to your desired specifications and track and monitor all water usage.

  • Communicates with your
    Smartphone via Bluetooth

  • Simply set the time of day, time of
    regeneration, and backwash

  • Fully programmable cycles


Automatic Backwash

The electronic control center is easy to set and once set, you never have to set it again (except for DST). The Flexx system incorporates an automatic backwash which removes accumulated contaminants and automatically backwashes the filtration media. This eliminates pressure drop and keeps the media in top condition.




Model #BathroomsPeak FlowBackwash FlowFilter Tank Size
081-FX-1501-210 GPM5 GPM10" x 54"
081-FX-2503-620 GPM7 GPM13" x 54"

System Includes



additional information

Warranty10 Years on Carbon Tank 7 Years on Carbon Filter Valve & Valve Electronics
ManufacturerUS Water Systems