AXEON XE1-4040 RO Membrane, 4" x 40"

Get More Clean Water Out of Every Watt Your RO System Uses

A reverse osmosis membrane sits at the center of everything your system does — and a membrane that needs high pressure to perform, or that falls short on rejection rate, quietly drives up both your energy costs and the mineral content slipping through into your feed water.

The AXEON XE1-4040 Membrane is engineered to avoid both problems. It operates at a low applied pressure of just 100 psi while delivering a 99.2% nominal rejection rate — enhanced performance and real energy savings packed into a single membrane element (AXEON Part #211757).

Fiberglass-wrapped for durability and NSF-61 certified for water quality, it's manufactured in an ISO-9001 compliant automated rolling facility and shipped dry for extended shelf life — and it's built to the standard 40" x 4" x 4" sizing that fits AXEON N-Series systems as well as other RO systems using 4040-series membranes.

Key Features & Benefits

• Operates at a low 100 psi — delivers enhanced performance and meaningful energy savings compared to membranes that need higher pressure to perform.
• 99.2% nominal rejection rate — filters out a high percentage of dissolved solids for cleaner output water.
• NSF-61 certified — meets recognized standards for materials that come into contact with drinking water.
• Fiberglass-wrapped construction — adds durability and helps the membrane hold its structure under operating pressure over time.
• Manufactured in an ISO-9001 compliant automated facility — produced under tightly controlled quality standards for consistent performance from element to element.
• Shipped dry for extended shelf life — arrives ready to store until installation without the handling concerns of a wet-shipped element.

Who Should Use This RO Membrane

This membrane suits operators of AXEON N-Series systems who need a replacement element, as well as anyone running a different RO system built around standard 4040-series membranes who wants a low-pressure, high-rejection-rate option that helps keep both water quality and energy costs in check.

Knowing When to Replace Your Membrane

RO membranes lose efficiency gradually — output water quality drifts, the system has to work harder to hit its targets, and energy use creeps up as a result. Keeping a spare XE1-4040 on hand and tracking your system's TDS readings over time makes it easy to spot that drift early and swap the element before performance — or your energy bill — takes a real hit.

Frequently Asked Questions

What systems is this membrane compatible with?

It's compatible with AXEON N-Series RO Systems as well as alternative reverse osmosis systems that use standard 4040-series membranes.

What size is this membrane?

It measures 40" x 4" x 4" — the standard 4040 membrane size used across a wide range of RO systems.

How efficient is it at filtering water?

It delivers a 99.2% nominal rejection rate while operating at a low applied pressure of just 100 psi, which means strong filtration performance without the higher energy costs that come with high-pressure membranes.

Is it certified for water quality?

Yes — it's NSF-61 certified, meeting recognized standards for materials that contact water destined for use in sensitive applications.

How is it shipped and stored?

It's shipped dry, which extends its shelf life, and is fiberglass-wrapped for added durability during storage and operation.