New highly efficient membrane filter outperforms conventional crossflow membrane technologies

Exceptional Flux

  • Uses a unique composite single-layer microstructure membrane for spiral wound filters
  • Flux rate 2 to 4 times higher than conventionally cast polymeric membranes
  • Lower fouling with improved cleanability
  • Targeted for ultra and micro filtration applications

Exceptional Separation

  • Separates virtually all undissolved constituents due to its precise pore size distribution across the ultra  and micro filtration spectrums
  • Capable of consistently separating down to <10 ppm levels: free oil, emulsified materials (e.g. oil, soap, surfactant-laced fluids) and total suspended solids (e.g. bacteria, other particulates)
  • Able to handle system upsets of high oil content

Exceptional Durability

  • Operates at maximum temperatures from 135 to 155 °F
  • pH levels from 1.8 to 10
  • Exceptional oil and chemical resistance
  • Capability to backwash

Innovative material science technology drives superior performance

The superior performance of the PPG membrane is driven by advancements in material science made by PPG's team of scientists and engineers. The proprietary manufacturing process allows a precise pore size which can be varied over the ultra and micro filtration ranges with a narrower pore size distribution compared to conventionally cast membranes.

A composite membrane is formed by combining a nanoporous, hydrophilic inorganic filler and a hydrophobic polymer. The hydrophilic nature of the high surface area inorganic filler creates strong capillary forces, pulling water through the membrane. The nanoporous structure reduces fouling by not allowing penetration of oil droplets or solid particles. This innovative morphology results in higher flux rates and more efficient oil/water separation and suspended-solids removal than conventionally cast hydrophilic and oleophilic membranes.

Magnification of the PPG membrane (x10000)

Wide Operational Envelope

Property Filter Limits
Single filter flux rate, oil and water mixture 15 - 25 GFD
Single filter flux rate, water 50 - 80 GFD
Maximum temperature 135 - 155 °F
Maximum Pressure 70 psi
Maximum Transmembrane Pressure 35 psi
pH range 1.8 - 10

This table serves only as a guide. Factors such as temperature, pH, concentration, exposure time, and system differential pressure can have a material effect on these recommendations. Testing in accordance with the end user's safety guidelines is recommended Due to the multitude of factors effecting chemical compatibility, the user is responsible for making final selection of products and materials for an application.

Learn more about PPG filters by accessing our resources.

Marketing Literature    
PPG Filter Product Overview
Product Overview
PPG ECoat Product Overview
ECoat Product Overview

Product Matrix
Product Data Sheets    

PPG 2540 Data Sheet 

PPG 4040 Data Sheet

PPG 8040 Data Sheet

PPG 7640 Single Seal Data Sheet

PPG 7640 Double Seal Data Sheet
White Papers    

High-Flux Polymeric Membrane for Industrial Water Separation

High-Flux Membrane Filtration for Oil and Water Separation

Weftec 2016 Interview with Lisa Walters, Filtration Segment Manager, PPG

Filtration Technologies
440 College Park Drive
Monroeville, PA 15146

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