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Franklin 40x40 NF Nanofiltration Commercial Membrane Part # FWME4040NF-1R

List Price: $824.00
$49450
$49450
SKU FWME4040NF-1R
Brand Franklin Water Treatment
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$329.50

NF Commercial Membranes by Franklin Water Treatment

The Franklin 4.0″ × 40″ NF Commercial Membrane is a high‑performance nanofiltration (NF) membrane designed for commercial and light‑industrial water treatment applications where selective contaminant removal is required without full demineralisation.

Nanofiltration membranes operate between ultrafiltration (UF) and reverse osmosis (RO). This membrane is engineered to strongly reduce hardness, sulphates, colour, organics, and multivalent ions, while allowing a portion of monovalent salts (such as sodium and chloride) to pass through. The result is improved water quality with lower operating pressure and energy consumption compared to reverse osmosis systems.

This makes the FWME4040NF‑1R an excellent choice for applications such as commercial water softening, colour and tannin reduction, PFAS treatment (application‑dependent), and RO pretreatment, where full salt rejection is not required.

Key Features

  • Commercial‑grade 4.0″ × 40″ nanofiltration membrane
  • Selective rejection of divalent ions (calcium, magnesium, sulphates)
  • Partial passage of monovalent ions for balanced water chemistry
  • Lower operating pressure than reverse osmosis
  • Helps reduce scaling and improve RO system recovery when used as pretreatment
  • Suitable for commercial, institutional, and light‑industrial systems

Typical Applications

  • Commercial water treatment systems
  • Hardness and sulphate reduction
  • Colour and tannin removal
  • Pretreatment ahead of reverse osmosis
  • Process water and specialised filtration needs

Will this membrane fit your system?

1. Click – The main product photo for this membrane
2. Find – The diagram with "A - D" reference points
3. Compare & Match – Diagram references with the following measurements:

Diagram Reference Measurement
A = 10"/101.6cm
B = 3.9"/9.9cm
C = .75"/1.91cm
D = 1.05"/2.67cm
Did you find a match?

If you did, then you have found the right replacement membrane for your system!

Note: Proper Pre-Treatment is the key to membrane health and longevity.

Franklin Water Treatment

Franklin Water's Membranes are built for reliability, consistent performance, and compatibility with standard 4″ commercial membrane housings.

New Part # FWME4040NF-1R

Franklin Water Treatment Product Lines
Product Category Filters Product Lines Filtered by Category Franklin Water Treatment Product Category Filters

Franklin Water Treatment Canada – Formerly Waterite delivers advanced water treatment systems and filtration solutions designed to improve water quality for residential and light commercial applications.

Building on the Legacy of Waterite, a respected Canadian water treatment manufacturer for nearly 40 years, Franklin Water Treatment Canada continues to provide reliable equipment engineered to address difficult water purification challenges such as hardness, chlorine, sediment, and other contaminants.

About Franklin Water Treatment Canada & Waterite

Now part of Franklin Electric, Waterite continues its legacy as Franklin Water Treatment Canada – combining decades of trusted service with the innovation of a global leader. Solutions include water softeners, filtration systems, and reverse osmosis systems, all engineered to meet the diverse water treatment needs of Canadian homes and businesses.

With a focus on performance, reliability, and practical system design, Franklin Water Treatment Canada offers a broad portfolio of water softeners, filtration systems, drinking water solutions, and point-of-use filtration products. These systems are designed to help protect plumbing and appliances while delivering cleaner, better-tasting water for homes and businesses.

The Franklin Water Treatment Canada product lineup includes complete water softener systems such as the HC, CC, MA, HP, and FWT series. These systems are engineered to address common water quality concerns including hardness, chlorine, iron, sediment, and other contaminants that can affect both water performance and taste.

In addition to full treatment systems, Franklin Water Treatment Canada offers an extensive range of point-of-use and point-of-entry filter cartridges. These include carbon block, granular activated carbon (GAC), pleated, polyspun, stringwound, and specialty cartridge designs suited for residential and commercial filtration applications.

Cartridge families include a broad range of Franklin Water (Waterite) Filters: Carbon Block, Impregnated Carbon, Granular Activated Carbon, Radial Hi Flow GAC, Inline Carbon, Pleated Sediment, Spun Polypropylene, Dual Gradient Polyspun, Stringwound Sediment, Stringwound Hot Water, Dual Media Polypropylene and High Flow Pleated filter / cartridges. Providing a comprehensive selection of dependable options for your reverse osmosis, drinking water, and whole-house filtration requirements.

If you are looking for a specific Franklin Water Treatment Canada system, replacement filter cartridge, or a compatible Waterite crossover part not listed on this page, please contact us by email or call our office (1-866-489-4004) for assistance. We can help you identify the correct filtration or water treatment solution for your application.

Browse our full selection of Franklin Water Treatment Canada water softeners, filtration systems, drinking water systems, and replacement filter cartridges and get dependable water treatment components shipped FAST from our Canadian warehouse DIRECTLY to your door. A real Water Guy can help you select the right system to improve your water quality.

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