NWS
NWS Con. Flow AIO 14"x65" w/Katalox
NWS Con. Flow AIO 14"x65" w/Katalox
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A complete whole-house air-injection filter. One price includes everything listed below.
What's in the box
| Size | Mineral tank | Media | Control valve |
|---|---|---|---|
| 14" x 65" | 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.
The NWS Control Flow AIO 14"x65" with Katalox-Light® is the flagship multi-contaminant system from , built for large homes battling iron, sulfur, and manganese all at once. Its 14" x 65" polyglass tank carries 3-1/2 cubic feet of Katalox-Light® media for the broadest, highest-capacity treatment in this residential family.
Katalox-Light® also reduces arsenic, hydrogen sulfide, and other metals — without potassium permanganate or chlorine. Paired with air injection oxidation and metered Control Flow Technology, the system provides comprehensive whole-house treatment while regenerating only when actual water demand requires it, keeping consumption efficient even at this large scale.
- Reduces iron, sulfur, manganese, arsenic, H2S, and other metals
- 3-1/2 cubic feet of Katalox-Light® media
- 14" x 65" black polyglass mineral tank
- 1" NWS metered control valve with Control Flow Technology
- Bypass valve included; plumbing adapters separate
- No KMnO4 or chlorine; about 281 lbs shipping weight
Flagship Performance
Katalox-Light® offers low pressure loss, high service and flow rates, and high bed loadings with reduced backwash frequency — running up to 12 gpm per square foot and requiring just 5 to 10 minutes of backwash at 5.5 gpm per square foot. The 14-inch tank pairs that capable media with the highest flow capacity in the range, ideal for large or multi-bath households. Supplied by Water Softener Plus and installed at the point of entry, it tackles the most complex well-water chemistry with efficient, low-maintenance operation.
For demanding well water, testing for iron, manganese, sulfur, and pH before setup helps confirm sizing and ensures the Katalox-Light media is matched to your conditions. Locate the unit on a level surface near the main line and a suitable drain, with clearance above the tank for valve service. With no potassium permanganate or chlorine to manage, ongoing care is minimal, and the high-loading media delivers strong, multi-contaminant performance over a long service life.
From the control valve to the media bed, every part of this Water Softener Plus system is selected to work together reliably, so once it is installed and dialed in you can simply enjoy the improvement in your water without thinking about it.

