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NWS Control Flow AIO 14x65 Sulfur Sys

NWS Control Flow AIO 14x65 Sulfur Sys

Regular price $3,641.99
Regular price Sale price $3,641.99
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Taxes included. Free shipping to the lower 48 — nothing added at checkout.
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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 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 14x65 Sulfur System is the largest residential sulfur filter from , designed for big homes or wells with intense hydrogen sulfide odor. Its 14" x 65" polyglass tank holds 3-1/2 cubic feet of sulfur media for maximum whole-house odor reduction — all without salt or chemicals.

Air injection oxidation powers the treatment: a maintained air pocket oxidizes dissolved hydrogen sulfide, the deep media bed captures the resulting particles, and Control Flow Technology meters backwash to actual household usage. The system regenerates only when needed, flushing sulfur to drain and renewing the air cushion automatically, with nothing to refill between cycles.

  • Maximum-capacity whole-house sulfur reduction
  • 3-1/2 cubic feet of sulfur media plus base media
  • 14" x 65" black polyglass mineral tank
  • 1" NWS metered control valve with Control Flow Technology
  • Bypass valve included; plumbing adapters separate
  • Approximate shipping weight: 234 lbs

Highest Flow in the Range

The wide 14-inch diameter and tall 65-inch body deliver the strongest service flow among the residential sulfur systems, making this a fitting choice for large families, multi-bath homes, or wells with severe rotten-egg odor and heavy simultaneous demand. Installed at the point of entry, it ensures fresh, odor-free water reaches every fixture in the home. Supplied by Water Softener Plus, the unit arrives nearly complete — just add the plumbing adapters that match your connections — for powerful, chemical-free, low-maintenance sulfur control.

When planning the install, locate the system at the point of entry ahead of any softener so hydrogen sulfide is removed before it reaches other equipment or the water heater. A nearby drain handles backwash discharge, and the control head plugs into a standard outlet. Because sulfur problems can fluctuate seasonally on some wells, the scheduled backwash keeps odor control steady even as conditions change throughout the year.

Supplied and supported by Water Softener Plus, this -built system reflects the quality and consistency homeowners and installers have come to expect from the brand, giving you confidence in a long, dependable service life treating your home's water. It is a sound, lasting choice for any household ready to put its water-quality problems behind it for good.

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