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OEM/ODM Reverse Osmosis Membranes for Low-Pressure Systems

Reverse Osmosis Membranes for Low-Pressure Systems

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Introduction to Low-Pressure RO Membranes

Reverse Osmosis (RO) membranes are the core filtration component that delivers the highest purity water by selectively removing up to 99% of Total Dissolved Solids (TDS), including salts, metals, fluorides, and viruses. Low-Pressure RO Membranes represent an evolution in this technology, engineered to achieve the same high rejection rates as standard membranes but requiring significantly lower incoming water pressure. This innovation translates directly into two major user benefits: reduced energy consumption (for systems with pumps) and more efficient operation in areas with naturally low water pressure.

At Ningbo Yaorui Water Purification Technology Co., LTD., we specialize in manufacturing Thin Film Composite (TFC) membranes optimized for low-pressure performance. Our 15 years of deep industry knowledge allow us to achieve a superior membrane surface structure and flow dynamics, maximizing the output of purified water (permeate) while minimizing the wastewater (reject) ratio, even at lower driving pressures. These membranes are crucial for tankless RO systems and regions globally where water pressure is a known constraint (e.g., top floors of buildings, older plumbing).

We offer a full range of capacity ratings (e.g., 50 GPD to 800 GPD) in standard housing sizes (e.g., 1812, 2012) optimized for low-pressure residential and light commercial use. By manufacturing these precision components in our dedicated facility, we maintain strict quality control, ensuring every membrane meets a guaranteed minimum salt rejection rate. We are a key supplier for international OEM partners who require reliable, energy-efficient RO solutions for competitive markets across the US, Australia, and Asia.

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Key Specification Parameters

ParameterRange / DescriptionPerformance Metric
Membrane TypeThin Film Composite (TFC) PolyamideIndustry Standard for High Purity
Operating Pressure50 PSI - 80 PSI (Optimized Range)Lower Requirement than Standard (Typically 100 PSI+)
Capacity (GPD)50 GPD to 800 GPD (Gallons Per Day)Volume of Purified Water Produced Daily
Salt Rejection RateMinimum 96%, Average 98%Critical Measure of Purification Efficiency
Standard Sizes1812, 2012 (Residential) & Larger (Light Commercial)Housing Compatibility
Maximum TDS1,000 ppm to 2,000 ppm (Source Water Quality)Membrane Limitation for Source Water
Maximum Chlorine Level0 ppm (Requires Carbon Pre-Filter)Chlorine Damages TFC Membrane Material

The most important specification for these products is the Operating Pressure. A standard residential RO membrane might require 60 PSI to function optimally, while our low-pressure membranes can achieve excellent performance at 50 PSI or less, making them suitable for pump-less systems in some conditions, or significantly extending the life and reducing the duty cycle of booster pumps in others. The Salt Rejection Rate is the verifiable quality standard; our membranes consistently achieve high rejection rates, meeting or exceeding industry averages. Manufacturing consistency is paramount—a small flaw in the TFC layer can drastically reduce performance. Our advanced winding and sealing technology ensures uniform flow and high-integrity sealing, providing reliable, reproducible quality for our global trade partners.

Core Advantages of Our Low-Pressure RO Membranes

  • Superior Energy Efficiency: The primary advantage is the lower PSI requirement, which drastically reduces the strain on any required booster pump, lowering energy consumption and extending the pump's service life—a huge selling point for environmentally and cost-conscious consumers.

  • Optimized for Low-Pressure Environments: Guaranteed performance even in homes with naturally low water pressure, ensuring consistent water production where standard membranes might stall or produce highly reduced flow.

  • High Flow and High Rejection Balance: Our specialized TFC material allows us to maintain the crucial balance of high salt rejection (for purity) with high permeate flow (for convenience), meaning users get purified water faster than many standard high-pressure membranes.

  • Consistency and Quality Control: Manufactured in our dedicated Ningbo facility, every membrane element is rigorously tested for its salt rejection rate before shipment, ensuring flawless quality and operational reliability upon arrival for our global OEM partners.

  • Competitive Global Export Pricing: By focusing our manufacturing expertise on these high-demand components, we offer a high-tech product at a competitive factory-direct price, providing distributors with a strong advantage in the premium RO market segment.

These advantages solidify our commitment to delivering advanced, reliable, and market-ready RO technology to the world.

Essential Applications for Low-Pressure RO Membranes

Low-pressure membranes are ideal for any application where high-purity water is needed, particularly in environments facing flow or pressure limitations.

  • Tankless and Compact RO Systems: Their ability to operate efficiently at lower pressures makes them perfect for modern tankless systems that rely on immediate, on-demand filtration without a large storage tank.

  • Residential Homes with Low Water Pressure: Essential for homes, especially those on private wells or at the end of a municipal water line, where low incoming pressure is a chronic issue, ensuring the RO system can still produce enough water effectively.

  • Water Vending Machines and Light Commercial Use: Used in applications that need high-purity water in moderate volumes without the complexity of a high-pressure commercial system, maintaining efficiency without excessive energy draw.

  • Pre-Treatment for Specialty Water (e.g., Lab/Aquarium): Provides the necessary ultra-pure water foundation for specific needs where near-zero TDS is required, but a full-scale industrial RO unit is unnecessary.

  • Regions with High Water Costs/Taxes: The improved efficiency and lower wastewater ratio of low-pressure membranes can lead to significant cost savings on water consumption in areas where water costs are high.

These applications highlight the demand for highly efficient, pressure-tolerant components in the international filtration market.

Payment and Shipping for International Orders

We are committed to providing seamless and competitive logistics solutions for our international clientele. Located in the strategically important Ningbo Seaport City, we maximize efficiency and minimize shipping costs for global exports.

  • Payment Terms: We typically accept Telegraphic Transfer (T/T) as the primary payment method. For established partners with a history of orders, we may offer negotiable terms such as Letter of Credit (L/C) at sight or a deposit followed by balance payment upon Bill of L/Lading (B/L) copy. Minimum Order Quantities (MOQ) apply for OEM and custom manufacturing to ensure efficiency.

  • Shipping Logistics: Our proximity to Ningbo Sea Port allows for efficient consolidation and dispatch of both Full Container Load (FCL) and Less than Container Load (LCL) shipments. We offer multiple Incoterms options, including FOB Ningbo and CIF to major international ports in the USA, Canada, Australia, and Europe. Air freight options are available for urgent or sample orders, though sea freight is standard for volume shipments.

  • Lead Time: Standard lead time for production and quality control checks for RO membranes is generally 35-45 days after deposit, reflecting the precision manufacturing and quality testing required for these high-tech components.

  • Documentation: We provide comprehensive export documentation, including Commercial Invoice, Packing List, Bill of Lading, and Certificates of Origin as required. Detailed performance and integrity test reports are provided for quality assurance.

We ensure operational reliability in logistics, delivering our delicate, high-performance membranes securely and efficiently worldwide.

Frequently Asked Questions (FAQs)

  • Q: How do low-pressure membranes compare in purity (TDS rejection) to standard membranes?

  • A: Our low-pressure membranes are designed to maintain the same high level of TDS rejection (typically 98% average) as standard membranes. The primary difference is the pressure required to achieve that output, not the ultimate purity level.

  • Q: Why is chlorine removal essential before the RO membrane?

  • A: The TFC material in the membrane is highly sensitive to chlorine. Residual chlorine in the water will chemically break down the membrane structure, rapidly destroying its ability to reject contaminants. A high-quality carbon pre-filter is mandatory to protect the membrane and ensure its lifespan.

  • Q: What is the average lifespan of a low-pressure RO membrane?

  • A: The lifespan is typically 2 to 3 years, heavily dependent on the quality of the incoming water (specifically TDS and hardness levels) and the effectiveness of the pre-filtration (sediment and carbon). Regular pre-filter changes are the single most important factor for membrane longevity.

  • Q: Can I use this low-pressure membrane in a high-pressure system?

  • A: Yes, the membrane will function safely in a high-pressure system, and in fact, it may yield slightly higher flow rates. However, its core benefit (efficiency under low pressure) would be less utilized. If the pressure is extremely high (over 120 PSI), a pressure regulator is always required to protect the entire system.

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we provide quality products and services to customers from all over the world

  • 15YEARS
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    As we already have 15 years history in this area with 80 workers. New workshop takes 18000 square meters.

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    We are 24/7 available all year around for mail reply as we value every chance that customer offered.

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    All our molds are passed testing for more than 100000 times before we start production which makes our quality superior then other.

  • 18000square meters workshop
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    We have a standard workshop for cartridge manufacturing, water filter injection, assembling and testing which support our capacity to export more than 10 containers per week.

About Yaorui
Ningbo Yaorui Water Purification Technology Co., LTD.

Ningbo Yaorui Water Purification is a professional China Reverse Osmosis Membranes for Low-Pressure Systems Manufacturers and Custom Reverse Osmosis Membranes for Low-Pressure Systems Suppliers. We specialize in, with over 15 years of industry expertise. We offer a comprehensive range of water filters for drinking water use, shower filters, Coffee machine filters, and outdoor use.

Our factory is strategically located in Ningbo Sea Port City, allowing us to efficiently serve customers across the United States, Canada, Australia, and beyond. This prime location enables us to sell our products globally at competitive prices while providing exceptional customer service. In addition, our extensive experience and deep industry knowledge equip us to tackle complex challenges and deliver customized solutions for those who want to buy water filters.

We are dedicated to continuous quality improvement and new product development, ensuring that every product meets the standards of performance and reliability. By leveraging advanced technology and practices, we minimize environmental impact while product performance. Our commitment to excellence is reflected in our pursuit of sustainable production, flawless quality, and operational reliability.

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