NWS
NWS Control Flow AIO 12x52 Sulfur Sys
NWS Control Flow AIO 12x52 Sulfur Sys
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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 |
|---|---|---|---|
| 12" x 52" | 12" x 52" | 1-3/4 cu ft sulfur-removal filter media (catalytic carbon blend) | 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: sulfur-removal filter media (catalytic carbon blend), 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 hydrogen sulfide: no rotten-egg smell
- Stops black staining on fixtures and silverware
- Daily automatic backwash keeps the bed clean
- 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 12x52 Sulfur System delivers high-capacity hydrogen sulfide control for larger households. Manufactured by , it combines air injection oxidation with metered Control Flow Technology to remove rotten-egg odor from well water — without salt or chemical feed of any kind.
With 1-3/4 cubic feet of sulfur media in a roomy 12" x 52" polyglass tank, the system has the depth and flow capacity to serve homes with substantial daily demand. The air pocket oxidizes dissolved sulfur, the media bed captures the particles, and the metered control valve backwashes based on actual water usage rather than a fixed schedule, keeping both performance and water efficiency consistently high.
- High-capacity whole-house sulfur reduction
- 1-3/4 cubic feet of sulfur media plus base media
- 12" x 52" black polyglass mineral tank
- 1" NWS metered control valve with Control Flow Technology
- Bypass valve included; plumbing adapters separate
- Approximate shipping weight: 130 lbs
Sized for Larger Homes
The 12-inch diameter increases service flow, making this a strong match for bigger families or wells with pronounced sulfur odor and several fixtures running at once. As point-of-entry equipment, it ensures every shower, faucet, and appliance receives fresh, odor-free water from a single installation. Metered regeneration keeps water use efficient by running only when needed. Supplied by Water Softener Plus, the unit arrives nearly complete — add the plumbing adapters that match your connections — for dependable, low-maintenance, chemical-free sulfur treatment.
Testing your water for hydrogen sulfide and pH before setup helps confirm that air injection is the right approach and that the system is sized correctly for your conditions. Once installed and programmed, the unit requires very little hands-on care: the air pocket renews itself with every backwash and there is nothing to refill. Over the long term, only an eventual media replacement is needed to keep odor reduction at full strength.
As part of the Water Softener Plus catalog of well-water treatment equipment, this unit is chosen and assembled to deliver consistent, real-world results, helping you protect your plumbing investment while enjoying noticeably better water at every fixture in the house.
