Product Overview
The RL-4040 is a high-performance reverse osmosis (RO) membrane element manufactured by MD, a leading supplier of water treatment solutions. Engineered for commercial and light industrial applications, it delivers efficient, reliable, and consistent water purification.
Product Standards
Manufactured with premium-grade materials to ensure long-term durability, the RL-4040 complies with strict industry standards and quality control regulations.
| Model |
RL-4040 |
| Salt Rejection(%) |
99.5% |
| Permeate Flow GPD(m³/d) |
2600(9.8) |
| Effective Membrane Area ft² (m²) |
100(9.3) |
| Operating Pressure psi(Mpa) |
225(1.55) |
| Max Operating Pressure psi(Mpa) |
600(4.14) |

| Model |
A/mm |
B/mm |
C/mm |
D/mm |
| RL-4040 |
1016 |
99.7 |
19 |
26.7 |

Product Features
· High Efficiency: The LP-4040 membrane offers exceptional water purification efficiency, effectively removing contaminants such as dissolved solids, heavy metals, and microorganisms.
· Excellent Salt Rejection: Features a high salt rejection rate to ensure the production of high-quality, purified water.
· Durable Construction: Built with high-quality materials to ensure long-lasting performance, reliability, and a long service life.
· Standard 4040 Size: With its standard 4040 dimensions, the membrane is highly compatible with a wide range of residential, commercial, and industrial RO systems.
· Easy Installation & Maintenance: Designed for simple installation and straightforward maintenance, reducing system downtime.
· Versatility: Suitable for flexible application across different industries, adapting to diverse water purification needs.
· Cost-Effectiveness: Offers long-term cost savings by reducing maintenance and replacement costs while maintaining reliable performance.
Product Functions
The LP-4040 Reverse Osmosis (RO) membrane is designed to effectively remove impurities, contaminants, and salts from water. It delivers clean, pure, and great-tasting water free from harmful substances, making it suitable for a variety of applications, including drinking water purification, industrial processes, and commercial water treatment systems.

Working Principle
The RL-4040 RO Membrane Element utilizes a thin-film composite membrane that allows water molecules to pass through while blocking impurities and contaminants. Operating pressure forces the feed water through the membrane, separating the purified permeate from the concentrated reject stream.

Applications
The RL-4040 Reverse Osmosis Membrane is highly versatile and suitable for a wide range of applications:
· Commercial: Ideal for restaurants, cafes, offices, and other commercial establishments requiring high-quality water for cooking, beverage preparation, and daily operations.
· Industrial: Used in various industrial processes such as pharmaceutical production, electronics manufacturing, and boiler feed water treatment.
· Specific Industries: Widely deployed in desalination plants and industrial wastewater treatment.
The RL-4040 RO Membrane is a reliable solution for water purification needs, offering superior performance, durability, and efficiency. Whether for commercial or industrial use, it provides clean, safe, and high-quality water for various applications.

OEM Services
MD provides OEM services for the RL-4040 reverse osmosis membrane. We can customize the product according to the specific requirements and branding needs of our customers. Contact us at info@md-desalination.com for more information.
Frequently Asked Questions
Q: How often should the RL-4040 membrane be replaced?
A: The replacement frequency depends on various factors such as feed water quality and operating conditions. Generally, the membrane should be replaced every 2 to 4 years.
Q: Can the RL-4040 membrane be used for seawater desalination?
A: No. The RL-4040 is specifically designed for brackish water and standard water purification, not seawater desalination. We offer specialized membranes designed for high-pressure seawater applications.
About MD
MD is a professional manufacturer and supplier of RL-4040 membranes. We have a wide range of standard and custom-designed membranes for various water treatment applications. Our products undergo rigorous testing and come with complete certifications. We offer fast delivery, secure packaging, and testing support. Contact us today at info@md-desalination.com to discuss your specific needs.