Katalox Air-Injection (AIO) Iron & Sulfur Filter

A complete whole-house air-injection filter. One price includes everything listed below.

What's in the box

Size	Mineral tank	Media	Control valve
10"x54"	10" x 54"	1-1/2 cu ft Katalox Light catalytic filter media	Control Flow metered air-injection valve
12"x52"	12" x 52"	2 cu ft Katalox Light catalytic filter media	Control Flow metered air-injection valve
13"x54"	13" x 54"	2-1/2 cu ft Katalox Light catalytic filter media	Control Flow metered air-injection valve
14"x65"	14" x 65"	3-1/2 cu ft Katalox Light catalytic filter media	Control Flow metered air-injection valve

• Control valve: Control Flow metered air-injection valve with built-in air injection.
• Bypass: bypass valve (included).
• Mineral tank: black fiberglass-wrapped mineral tank with support bed and distributor.
• Media: Katalox Light catalytic filter media, sized to the tank.
• Also included: 1" plumbing adapters, install and service manuals.
• Ships pre-built, ready to install, free in the US.

How it works

The valve draws a pocket of air into the top of the tank. Water passes through the air, which oxidizes iron, manganese and hydrogen sulfide into particles, and the media bed filters them out. Every day the valve backwashes the bed, sends the trapped particles to drain and refreshes the air pocket.

Media benefits

• Removes iron, manganese and hydrogen sulfide (rotten-egg smell) in one tank
• Handles high flow rates in a compact tank
• Long media life
• Backwashes the trapped particles to drain automatically
• Air injection oxidizes iron, manganese and sulfur with plain air, so no chemicals or chlorine are added

Why this system costs what it does

	This system	Typical lower-priced kits
Iron and sulfur treatment	Air injection: oxidizes with plain air, no chemicals	Often chlorine or permanganate feed, or no oxidation step
Filter design	Automatic daily backwash keeps the media bed clean	Often a non-backwashing upflow head or a cartridge housing
Bypass valve	Included	Often not included or an extra option
Media	Named media, sized to the tank	Media type or amount often not stated
Delivery	Ships pre-built, ready to install	Often ships in pieces for you to assemble and load
Shipping	Free in the US	Free only above a minimum, or extra

Not sure which size? Send a water test or tell us your symptoms and we will size it free.

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NWS Control-Flow AIO with Katalox Light

When a well throws several problems at you at once, a single-contaminant filter is not enough. This NWS Control-Flow air-injection system is loaded with Katalox Light media to take on iron, manganese, and hydrogen-sulfide odor together — chemical-free, in one tank.

Built for combination water problems

It is common for a well to show iron staining, the darker staining and bitter taste of manganese, and a sulfur odor all at the same time. Treating each in a separate vessel is expensive and space-hungry; this system consolidates the job into one tank by combining air-injection oxidation with a catalytic media proven against all three.

Air injection meets catalytic filtration

Water first passes through an air pocket at the top of the vessel, oxidizing the dissolved metals and sulfide. The Katalox Light bed then catalyzes that reaction further and filters the resulting particles from the water. The Control-Flow valve handles backwash and air renewal on a schedule, so the system cleans and refreshes itself with no chemicals to buy.

Key advantages

• Three problems, one system: iron, manganese, and sulfur.
• High-performance Katalox Light media for strong, durable results.
• Programmable Control-Flow valve matched to your water and demand.
• Chemical-free, self-renewing operation.

Multi-contaminant wells reward careful sizing and, where hardness or low pH are present, correct staging. The system plumbs into the main line and needs a drain for backwash. Share your water test and flow rate and we will confirm the build and size it for you. Ships free in the US with manuals and expert support.

One system, correctly matched

Combination wells vary widely, so the media fill and backwash timing that work for one home may be wrong for another. Provide a recent water analysis and your flow requirements and we will confirm this multi-contaminant build is the right answer, set it up for your specific water, and support you through installation and beyond.

With free US shipping, complete documentation, and knowledgeable support behind every order, you can treat iron, manganese, and sulfur together with confidence — and finally enjoy clean, clear, odor-free water at every tap in the house.