Nelsen Water Solutions Air Injection Oxidation Filters

Removes Iron and Sulfur

Iron, Manganese, and Sulfur, naturally occurring elements, can be removed using nature’s process of oxidation. The Signature Series AIO with Control Flow Technology maintains an “air pocket” at the top of the tank while the system is in service. As water passes through the air pocket, these elements are oxidized. The NWS AIO media bed then filters the oxidized iron, manganese, and sulfur from the water. Additionally, dissolved oxygen is added to the water.

The AIO System can remove up to 7 ppm Iron and up to 8 ppm Sulfur. A daily backwash will remove accumulated iron and re-oxidize the filter media bed. The regeneration process also adds a fresh air pocket to the system.

By reducing the iron and sulfur buildup in your water, your appliances will last longer. Appliances that use iron-laden water, such as water heaters, dish or clothes washers, work harder, less efficiently, and wear out faster than those using treated water.

Your Professional Water Conditioning Dealer is trained and dedicated to providing the best solution for your home and your family.


Benefits of a Nelsen Water Solutions System

Reduce Iron Staining

Iron staining is a common problem in homes today. It causes orange staining on fixtures, as well as dingy clothes and sometimes can have negative effects on both hair and skin.

Reduce Sulfur Smell

Sulfur is easily detected by the presence of a “rotten egg” odor, and is sometimes associated with yellow staining.

Protect your Appliances

By reducing the iron and sulfur buildup in your water your appliances will last longer. Rust and slime buildup make your appliances work harder and less efficiently, requiring more maintenance or replacement.

Efficient and Chemical Free

The need for additional equipment...air tanks, feed pumps, or harsh chemicals (like those used in Manganese Greensand Systems) is virtually eliminated!


Key Features

  • Patented technology provides a slow, quiet release to drain

  • Control Valve delays the start of regeneration if water usage is detected

  • Built in backup of settings during power outages

  • Simple diagnostics and design provide for easy maintenance

  • Easy to read back-lit display

  • Systems are efficient and chemical free

  • Oxidation Air Pocket - As water passes through the air pocket, iron, sulfur and manganese are oxidized. The media bed then removes the oxidized contaminants from the water, additionally, dissolved oxygen is added to the water

  • Exclusive Media Bed - Custom blends of media for efficient reduction of iron, sulfur and manganese

  • Custom blend of media used for support bed of filter media

Additional Resources



Enpress Vortech™ Plate Style Tank - Vortech creates better backwashing and cleaning action of media and shorter backwashing requirements resulting in water savings

Learn More

Tank Jacket - Helps reduce excess condensation that can occur in humid locations, available in black neoprene or high-gloss chrome or colored plastic with microfoam insulation.  

Learn More

“Signature Series” Air Injection Oxidation System Specifications
Filter Media Capacity (cu ft) 1.25 1.5 2 2.5
Mineral Tank Size 10" x 44" 10" x 54" 12" x 52" 13" x 54"
Service Flow Rate - Peak 7.0 gpm 8.0 gpm 11.5 gpm 13.0 gpm
Approximate Dimensions (In.) 11W x 52H x 17D 11W x 62H x 17D 13W x 60H x 17D 14W x 62H x 17D
Approximate Weight - Pounds* 115# - 118# 120# - 167# 140# - 186# 185# - 222#

*System weights dependent on media used in the various systems, Iron, Sulfur, or Katalox systems.

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