RO Membrane (4-inch / 8-inch)

4-inch and 8-inch RO membranes — high-rejection, low-energy and seawater grades.

RO Membrane (4-inch / 8-inch)

Overview

Puraxtek supplies 4-inch (4040) and 8-inch (8040) reverse-osmosis membrane elements for brackish, drinking, industrial and seawater applications. We offer genuine and compatible brands so you can balance performance and budget.

  • 4040 and 8040 standard elements
  • High-rejection and low-energy options
  • Brackish-water and seawater membrane grades
  • Genuine brands plus compatible alternatives
  • Correct membrane selection guidance by feed water
  • Bulk supply and distribution for plant operators
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Applications

Where It’s Used

Specifications

Technical Specifications

Sizes4-inch (4040) and 8-inch (8040)
Rejection99.0 – 99.7% (grade dependent)
Permeate flowper element specification
Feedbrackish / fresh / seawater grades
Pressure150 – 1200 psi per application
Supplysingle elements to full vessel loading
FAQ

Frequently Asked Questions

How do I choose between high-rejection and low-energy membranes?
High-rejection elements maximize water quality; low-energy elements cut pumping cost on low-salinity feed. We recommend based on your TDS, target recovery and electricity price.
Do you supply membranes for existing systems?
Yes — provide your element model or system design and we will supply compatible or genuine elements matched to your train.
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