Nelsen 1.25" Air-Injection (AIO) Iron & Sulfur Filter (No Media)


Size: 14"x65"

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A 10–15 year home upgrade — we help you buy the right system once, and back it for life.
  • ✓ Free U.S. Shipping
  • ✓ Free Sizing HelpTalk to a water expert
  • ✓ Lifetime Tank WarrantyMfr-backed valve coverage
  • ✓ Genuine-Brand Control ValvesFleck · Pentair · VIQUA — serviceable for decades, never disposable clone heads
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Nelsen 1.25" Air-Injection (AIO) Iron &...Request pricing
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NWS 1.25" air-injection system (media not included)

This NWS air-injection system is built on a 1.25-inch control valve and ships without media — the configuration many dealers, installers, and experienced DIY owners prefer when they want to select and load the specific filter media suited to their water. You get the tank, the air-injection control valve, and the platform; you choose the media that matches your contaminants.

Who this build is for

Water-treatment professionals and hands-on owners often keep media in stock or want to specify a particular product based on a customer's exact water test. Buying the hardware without media lets them do that — and lets them refresh only the media down the road rather than replacing the whole system.

Why buy it “less media”

Not every well is the same. By purchasing the system without media, you can match the bed precisely — for example a catalytic media for iron, manganese, and sulfur, or another blend for a specific problem — and control quality and cost on the media itself. The air-injection mechanism is unchanged: a maintained air pocket oxidizes dissolved contaminants and the media you load filters them out, with automatic backwash renewing the system.

Good to know

  • Media is purchased separately and loaded at installation.
  • 1.25-inch control valve suits solid whole-house flow.
  • Chemical-free air-injection oxidation and filtration.
  • Programmable, self-renewing backwash.

If you are not certain which media your water calls for, send us your test results and we will recommend the right fill and quantity to complete the build. Ships free in the US with manuals, and our team can help you get it installed and dialed in correctly.

Complete the build with confidence

Choosing media without guidance can be daunting, so if you would rather not go it alone, send us your water test and we will recommend the exact media type and quantity to load. Whether you are a pro stocking your own supply or an owner finishing a first install, we will help you get the fill and the valve settings right.

Backed by free US shipping and a team happy to spec the media for your exact water, this flexible platform lets pros and confident owners build precisely the system their well requires.

Overview

  • 🇺🇸 U.S.-based support and expert assistance
  • 🔧 Built with trusted, industry-standard components
  • 🚚 Ships nationwide - freight-safe packaging
  • 🏠 Ideal for residential and light-commercial systems

Specs (Typical)

Max Operating Pressure125 psi
Max Water Temp100 °F
Electrical120 V AC
Flow Range5-45 GPM (model dependent)

Related: Control Valves . Parts . Get sizing help

Free Manual PDF

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