High-Performance RO Membranes — 8040 & 4040 Reverse Osmosis Elements for Reliable Water Treatment

Why a Quality RO Membrane Is the Heart of Any Water System

Choosing the right reverse osmosis membrane directly impacts water purity, operating cost, and downtime. Our thin film composite (TFC) RO membrane elements — including the industry-favorite 8040 RO membrane and the versatile 4040 RO membrane — deliver proven salt rejection, long service life, and flexible compatibility for replacement or OEM integration. Whether you are an equipment manufacturer, system integrator, or procurement manager, selecting the correct membrane ensures predictable performance and reduces lifecycle cost.

Key Advantages of Our TFC RO Membranes

• High Salt Rejection & Stable Quality: Our TFC membranes consistently achieve >=98–99% salt rejection under standard conditions, ensuring potable and process-grade water.

• Two Popular Sizes for Maximum Flexibility: The 4040 (4″×40″) is ideal for modular and small commercial units; the 8040 (8″×40″) scales to higher flow and industrial applications.

• Energy-Efficient Operation: Designed for high permeate flux at moderate pressures to reduce pumping costs.

• Anti-Fouling & Easy Cleaning: Optimized surface characteristics reduce fouling; compatible with standard acid/alkali cleaning protocols when proper pre-treatment is used.

• OEM & Compatible Options: Available as OEM or compatible replacements (e.g., DOW Filmtec compatible, Toray-compatible) for easy retrofits.

• Bulk Supply & Custom Packaging: Fast production lines for wholesale orders, with private labeling and customized packing available.

Typical Specifications (Quick Reference)

• Membrane Material: Thin Film Composite (TFC)

• Structure: Spiral-wound element

• Common Sizes: 4″×40″ (4040), 8″×40″ (8040)

• Nominal Production: 4040 ~800–1,200 GPD; 8040 ~3,000–4,000 GPD (standard test conditions)

• Salt Rejection: ≥98–99% (dependent on feedwater and operating conditions)

• Operating pH: Short-term 2–11 (follow cleaning guidelines)

• Max Temp: ≤45°C (recommended ≤35°C for long life)

• Chlorine Sensitivity: TFC membranes require dechlorinated feed (<0.1 ppm free chlorine)

Application Scenarios — Match the Membrane to Your Need

• Drinking Water & Bottled Water Plants: Use high-rejection 4040 or 8040 elements depending on capacity.

• Industrial Process Water & Boiler Feed: 8040 membranes provide the higher area and throughput industrial systems need.

• Food & Beverage Production: Sanitary handling plus consistent permeate quality makes TFC membranes ideal.

• Desalination & Brackish Water Treatment: Choose brackish- or seawater-rated variants and pair with robust pre-treatment.

• Laboratory & Medical Devices: 4040 elements for compact systems requiring stable purity.

How to Choose Between 4040 and 8040

1. Capacity Requirement: If your system demand is under ~4 m³/day, 4040 elements in parallel may be cost-effective. For multi-ton/day systems, 8040 reduces footprint and piping complexity.

2. System Footprint: 4040 suits compact racks and modular skids; 8040 works better in centralized plants.

3. Retrofit vs New Build: For retrofits, pick an element compatible with your existing housings (check OEM model compatibility).

4. Feedwater Quality: Higher TDS or fouling potential requires more conservative recovery targets and possibly anti-scaling pretreatment.

Installation & Maintenance Tips (for Longer Membrane Life)

• Always Dechlorinate: Use activated carbon or chemical dechlorination; free chlorine damages TFC membranes.

• Pre-treatment Is Critical: Sediment, silt density index (SDI), and organics must be controlled via multimedia filters, cartridge filters, or ultrafiltration.

• Monitor Differential Pressure (ΔP): Rising ΔP signals fouling — schedule chemical cleanings before irreversible damage occurs.

• Follow Manufacturer Cleaning Protocols: Use recommended acid/alkali cleaners and concentrations; keep cleaning logs to optimize intervals.

Competitive Comparison (Quick)

Frequently Asked Questions (FAQ)

Q: Can I replace my Filmtec membrane with your membrane?
A: Yes — we supply compatible replacement elements. Provide your current model number and we’ll confirm fit and performance.

Q: How long do your membranes last?
A: Typical operational lifetime is 1–5 years depending on feed quality and maintenance. Good pre-treatment and scheduled cleaning significantly extend life.

Q: Do you provide samples or small trial orders?
A: Yes. Samples and trial quantities are available for qualified inquiries. Contact sales for MOQ and lead times.

Q: What certifications or test reports do you provide?
A: We provide datasheets, test reports, QA documentation, and can support third-party testing or certification requests per customer needs.

Call to Action — Get a Quote & Technical Support

Ready to upgrade your system or buy replacement membranes? Contact our sales team for volume pricing, OEM labeling, and sample orders. We provide technical compatibility checks and pre-treatment recommendations to ensure your system runs efficiently.

Email: sales@yourcompany.com
Alibaba Inquiry: [Click to Send Inquiry]
WhatsApp / WeChat: +86-123-456-7890

SEO & Publishing Tips (Quick)

• Add product schema (Product + Offer) on the page with SKU, price range, availability.

• Use alt text for images: e.g., “8040 RO membrane element thin film composite” and “4040 RO membrane spiral wound”.

• Publish a technical datasheet PDF (include feed TDS, test conditions) and link it on the page — buyers often download datasheets before contacting.

• Internally link to pre-treatment products (e.g., activated carbon, cartridge filters) to increase time-on-site and relevancy.