Ultra Low Pressure RO Membrane ULP-4040

Ultra Low Pressure RO Membrane ULP-4040 elements can produce high-quality water at low operating costs. They are perfect for use in large-scale industrial and municipal water treatment systems.

ULP-4040 elements can lower the operating pressure by 40%.

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Ultra Low Pressure RO Membrane ULP-4040

Description : 

ULP series ultra-low pressure reverse osmosis membrane elements are aromatic polyamide composite membrane elements used for surface water and groundwater desalination. The operating pressure of ULP series membrane elements is about 2/3 of the operating pressure of conventional composite membrane elements, and the desalination rate can reach 99.5%, thereby reducing the investment costs of related pumps, pipelines, containers and other equipment, and the operating costs of reverse osmosis systems. ,Improve economic efficiency


Operation Condition

Maximum Operating Pressure : 41 bar(600 psi)

Maximum Operating Temperature :45℃(113℉)

Maximum Pressure Drop per Element : 1.0 bar (15 psi)

pH Range, Continuous Operation: 2-11

pH Range, Chemical Cleaning: 1-13

Maximum Feed Silt Density Index (SDI15) :5.0

Free Chlorine Tolerance: < 0.1 ppm


  1. Permeate flow rates for individual elements may vary ±15%.
  2. Membrane active areas may vary ±4%.
  3. Stabilized salt rejection is generally achieved after continuous using for 24-48 hours, which depending on feed water qualities and operating conditions.


ModlesActive Membrane Area
Stabilized Salt Rejection (%)Permeate Flow Rate GPD(m3/d)

Single membrane element water production :±20% 

Applications :

ULP series components are generally suitable for desalination of water sources such as tap water and municipal water in surface water and groundwater with a salt content below 2000ppm. Mainly used in packaging water, drinking water, boiler feed water, food processing and pharmaceutical manufacturing industries and other fields

Clean Workshop

Replacement diagram

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