4 Inch & 8 Inch Membrane Vessels | NSF/ANSI 61 Certified For Potable Water Safety

Sep 04, 2025

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In the water treatment industry, the safety and reliability of membrane filtration technology are directly related to drinking water quality and public health. As the core pressure-bearing component of reverse osmosis (RO), nanofiltration (NF), and ultrafiltration (UF) systems, membrane vessels must demonstrate material safety, structural integrity, and long-term durability. Leveraging advanced materials engineering and manufacturing processes, Jiadun Technology introduces its NSF/ANSI 61-certified 4 inch and 8 inch Membrane Vessels series, providing fully compliant potable water safety solutions for municipal water supply, commercial purification, and industrial high-purity water applications.


✅ Core Product Features

🛡️ NSF/ANSI 61 Certified for Uncompromised Safety

Fully certified to NSF/ANSI 61 for drinking water system components, ensuring no harmful substances leach into the water and compliance with global potable water standards.

Materials are non-toxic, odorless, and free from chemical migration, making them suitable for high-standard applications such as direct drinking water and food and beverage processing.

🧰 High-Strength Composite Material, Pressure and Corrosion Resistant

Constructed with glass fiber reinforced epoxy composite, offering exceptional mechanical strength and excellent chemical corrosion resistance, with no rust or degradation over long-term use.

Operating pressures up to 600 psi (4 inch) and 450 psi (8 inch), suitable for high-pressure reverse osmosis systems, with burst pressures far exceeding industry standards.

🔧 User-Friendly Design for Easy Installation and Maintenance

Quick-closure end cap design allows for rapid membrane replacement or system maintenance without special tools, significantly reducing downtime.

Standardized connections compatible with mainstream 4 inch and 8 inch RO and UF membrane elements, ensuring strong adaptability.

🌍 Long-Lasting Durability for Various Water Quality Environments

Smooth inner walls reduce flow resistance and minimize scaling and fouling, extending membrane cleaning cycles and service life.

Operating temperature range of 0-45°C, suitable for different climates and water conditions, including high-chlorine and high-TDS feed water.


📊 Typical Application Scenarios

Municipal Drinking Water Projects: Residential drinking water systems, water purification for schools and hospitals.

Commercial and Food Service: Pre-treatment for beverage production, water purification systems in hotels and restaurants.

Industrial Water Use: Ultra-pure water preparation for electronics, pharmaceutical water, food processing water.

Emergency Water Treatment: Mobile purification equipment, emergency water supply devices for disaster areas.


🔍 Technical Specifications

Sizes: 4 inch (1, 2, 4 elements), 8 inch (1, 2 elements)

Max Working Pressure: 4 inch: 600 psi, 8 inch: 450 psi

Connection Types: 1/2", 1" NPT, clamp, flange (optional)

Material: Glass fiber reinforced epoxy resin

Certifications: NSF/ANSI 61, NSF/ANSI 58 (optional)


❤️ Why Choose Jiadun Technology Membrane Vessels?

Jiadun Technology adheres to the product philosophy of "Safety is Life." Every membrane vessel undergoes strict chemical safety testing, pressure cycle testing, and fatigue endurance verification from raw material selection to final product delivery. We not only provide standard products but also offer system compatibility analysis, pressure rating selection, and custom connection services to ensure optimal performance and maximum service life in various water treatment projects.


📦 Support Services

Free technical selection support and system configuration advice

Global fast delivery, OEM/ODM cooperation supported

Professional technical team provides installation guidance and troubleshooting

We sincerely invite you to experience the exceptional performance of Jiadun Technology's NSF/ANSI 61-certified membrane vessels in safety, reliability, and adaptability-they are not just pressure vessels for membrane systems but also faithful guardians of drinking water safety.

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