Extremely Low Pressure RO Element

Extremely Low Pressure RO Element is developed for treatment of surface water and underground water. Its operation pressure is about 1/2 of low pressure membrane, and the rejection rate can reach 98%. Thus it can reduce the investment cost of related pumps, pipelines, containers and other equipment and the operation cost of reverse osmosis system, improve economic benefits.

SKU: 5 Category:

Extremely Low Pressure RO Element normally suitable for treatment of surface water, underground water and municipal water with TDS is less than1000 ppm, It is especially suitable for the second pass of two-pass RO systen. It is mainly applied in bottle water, drinking water, boiler replenishment water, food processing and pharmaceutical manufacturing industries and other fields.

Features of Extremely Low Pressure RO Element has the characteristics of low energy consumption, high water production, extremely low operating pressure; wide application and low price; high desalination rate, large water flow, strong anti-pollution, anti-bacterial erosion; good chemical stability and relatively hydrophilic anti-pollution ability; acid and alkali resistance And microbial corrosion, uniform structure, long service life, slow performance degradation

  • Stable Rejection Rate: 98%
  • Min Rejection Rate: 97.5%


  • Max Operating Pressure: 600 psi(4.14 MPa)
  • Max Inflow Rate: 75 gpm(17 m3 /h)
  • Max Inflow Temperature: 45 ℃
  • Max Inflow SDI15: 5
  • PH Range in Continuous Operation: 3~10
  • PH Range in Chemical Cleaning: 2~12
  • Max pressure drop of a single membrane element: 15 psi(0.1 MPa)

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THE TEST CONDITIONS FOR Extremely Low Pressure RO Element

  • The test pressure: 100psi(0.69MPa)
  • Test liquid temperature: 25 ℃
  • Test liquid concentration (NaCl): 500 ppm
  • Test the pH of the liquid: 7.0 ± 0.5
  • Recovery rate of single film element: 15%

How to select the membrane element according to the salt content of inlet water?

Extremely Low Pressure RO Element

Permeate flow is the average value.The yield deviation of a single membrane element is ±20%

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