ULP 4040 Ultra-Low Pressure RO Membrane For Brackish & Municipal Water Treatment

Product Overview

The PSI MEMBRANE® Pro-LP ULP 4040 Ultra-Low Pressure Reverse Osmosis Membrane is specifically engineered for brackish water desalination and municipal water treatment systems.
By integrating advanced Thin Film Nanocomposite (TFN) Technology, the ULP 4040 RO membrane delivers high permeate flux under ultra-low operating pressure, enabling water treatment plants to significantly reduce energy consumption while maintaining stable, high-quality water output.

Designed for long-term reliability and cost efficiency, the ULP 4040 membrane is an ideal choice for municipalities and industrial operators seeking lower OPEX and optimized system design.

Key Features & Benefits

Ultra-Low Operating Pressure, Lower Energy Cost

The ULP 4040 reverse osmosis membrane achieves excellent salt rejection and high water flux at reduced pressure levels, making it highly suitable for energy-saving municipal and brackish water RO systems.
Its outstanding performance in low-temperature and cold feed water conditions ensures consistent productivity throughout the year.

Optimized System Design with Reduced CAPEX

Featuring a 440 ft² active membrane area, the ULP 4040 RO membrane enables system designers to use fewer membrane elements and smaller pumps. This reduces initial equipment investment (CAPEX) while maintaining efficient system throughput-an important advantage for large-scale municipal water treatment projects.

Enhanced Anti-Fouling Surface & Wide Cleaning pH Range

The PSI Pro-LP ULP 4040 membrane offers a wide chemical cleaning pH tolerance from 1 to 13, ensuring compatibility with various cleaning protocols commonly used in municipal and brackish water applications.
Its advanced anti-fouling surface improves cleaning efficiency, enhances durability, and extends membrane service life, even under challenging feed water conditions.

Typical Applications

The ULP 4040 RO membrane is widely used in:

Brackish water desalination plants

Municipal drinking water treatment systems

Municipal water reuse and upgrading projects

Industrial feed water pretreatment for municipal supply

Low-pressure RO systems requiring high energy efficiency

Why Choose PSI ULP 4040 Membrane?

Designed specifically for brackish & municipal water treatment

Ultra-low pressure operation for energy savings

Large effective area for lower system CAPEX

Proven durability with anti-fouling TFN technology

Stable performance in cold and variable water conditions

Product Summary

The PSI MEMBRANE® Pro-LP ULP 4040 Ultra-Low Pressure RO Membrane combines high performance, energy efficiency, and long service life. It is a reliable and cost-effective solution for municipalities and operators seeking sustainable brackish water and municipal RO treatment solutions.

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