Description

The ULP21-4040 Reverse Osmosis Membrane is a premium-quality 4-inch ultra-low pressure thin-film composite (TFC) membrane designed to deliver outstanding water purification performance while reducing operating costs. Manufactured using advanced polyamide membrane technology, it provides excellent salt rejection and high permeate flow at significantly lower operating pressures than conventional RO membranes.

Designed for commercial and industrial Reverse Osmosis systems, the ULP21-4040 is ideal for treating municipal water, borehole water, surface water, and low-salinity groundwater. It effectively removes up to 99.5% of dissolved salts, as well as heavy metals, bacteria, viruses, nitrates, fluoride, pesticides, and many other contaminants, producing high-quality purified water suitable for drinking water production and industrial applications.

Its ultra-low pressure operation reduces energy consumption, extends pump life, and lowers the overall operating costs of Reverse Osmosis systems.

Features:

• Ultra-low pressure operation for reduced energy consumption.
• High permeate flow with excellent desalination performance.
• Removes up to 99.5% of dissolved salts.
• Effectively reduces heavy metals, bacteria, viruses, nitrates, fluoride, and pesticides.
• Thin-film composite (TFC) polyamide membrane construction.
• Suitable for municipal, borehole, surface, and groundwater treatment.
• Compatible with standard 4040 membrane housings.
• Long service life with proper pretreatment.
• Excellent chemical cleaning resistance.
• Ideal for commercial and industrial Reverse Osmosis systems.

Specifications:

• Model: ULP21-4040.
• Membrane Type: Ultra-low pressure thin-film composite (TFC).
• Active Membrane Area: 100 ft² (9.3 m²).
• Average Permeate Flow: 2,600 GPD (9.8 m³/day).
• Stable Salt Rejection: 99.5%.
• Minimum Salt Rejection: 99.0%.

Standard Test Conditions:

• Test Pressure: 150 psi (1.03 MPa).
• Feed Water Temperature: 25°C.
• Test Solution: 1,500 ppm NaCl.
• Feed Water pH: 7.5.
• Single Element Recovery: 15%.

Operating Limits:

• Maximum Operating Pressure: 600 psi (4.14 MPa).
• Maximum Feed Water Flow: 16 GPM (3.6 m³/h).
• Maximum Feed Water Temperature: 45°C.
• Maximum Feed Water SDI: 5.
• Maximum Free Chlorine: <0.1 ppm.
• Continuous Operating pH Range: 3 to 10.
• Chemical Cleaning pH Range: 2 to 12.
• Maximum Pressure Drop Per Membrane Element: 15 psi (0.1 MPa).
• Maximum Pressure Drop Per Pressure Vessel: 50 psi (0.34 MPa).

Applications:

• Commercial Reverse Osmosis systems.
• Industrial Reverse Osmosis systems.
• Municipal water treatment.
• Borehole water purification.
• Surface water treatment.
• Groundwater desalination.
• Drinking water production.
• Food and beverage processing.
• Pharmaceutical water production.
• Boiler feed water and industrial process water.

Why Choose the ULP21-4040 Reverse Osmosis Membrane?

• Ultra-low pressure operation reduces energy consumption and operating costs.
• Produces up to 2,600 gallons (9.8 m³) of purified water per day.
• Delivers 99.5% stable salt rejection for consistently high-quality water.
• Removes dissolved salts, heavy metals, bacteria, viruses, nitrates, fluoride, pesticides, and other contaminants.
• Extends pump life by operating at lower pressures.
• Compatible with standard 4040 RO membrane housings.
• Designed for reliable commercial and industrial performance.
• Excellent resistance to chemical cleaning for extended membrane life.
• Suitable for a wide range of low-salinity water sources.
• Provides a cost-effective solution for high-quality water purification.