China PSU Core Tube Suppliers Pitch Efficiency Gains for Reverse Osmosis Systems

Fullstar says high-purity polysulfone core tubes help reverse osmosis and other membrane systems handle extreme pressure, harsh cleaning cycles and hygienic processing demands. The company is targeting industrial water treatment, dairy, food and oilfield applications as operators look to cut downtime and energy use.

Why it matters: - Reverse osmosis and other membrane systems rely on the central permeate tube for structural support, flow control and seal integrity. - In high-recovery plants, core tube failure can trigger downtime, contamination and higher maintenance costs. - Industrial buyers are also under pressure to improve water reuse, support zero liquid discharge goals and reduce energy losses. - Food and dairy processors face similar durability demands because sanitation cycles are frequent and chemically aggressive.

What happened: - Fullstar, the brand name for Xiamen Fullstar Imp.&Exp.Trading Co.,Ltd., promoted its polysulfone core tubes for membrane systems in 2026. - The company positioned its products for 8040 and 4040 reverse osmosis configurations, plus ultrafiltration and nanofiltration uses. - The product line also targets municipal water treatment, oilfield applications, and food-grade filtration for dairy and beverage processing. - More information is available on the company's website.

The details: - High-pressure desalination, mining water treatment and wastewater reclamation systems often operate above 70 to 80 bar. - Standard plastics can deform over time under hydrostatic creep, which can weaken O-ring seals and allow raw water to bypass the membrane. - Polysulfone is presented as a rigid, high-molecular-weight polymer that maintains dimensional stability under continuous load and elevated temperatures. - The company says its polysulfone core tubes are designed to prevent creep and reduce internal leakage in 8040 and 4040 systems. - Clean-in-place cycles often use acids below pH 2 and caustic solutions above pH 12 to remove scale and biofilms. - Fullstar says high-purity polysulfone resists hydrolytic degradation, cracking and leaching during repeated chemical cleaning. - The company also says the material’s smooth surface helps reduce protein and fat adhesion in dairy processing. - Precision slitting, perforation spacing and edge chamfering are used to reduce turbulence and backpressure inside the tube. - Better internal flow geometry can lower the pressure required from pumps and reduce energy consumption. - Fullstar says it uses virgin resins and customized slotting and perforation patterns for OEM designs.

Between the lines: - The pitch reflects a broader shift in membrane systems from membrane-only performance to whole-component reliability. - Core tubes are becoming a bigger procurement priority as operators try to protect uptime, avoid contamination and extend membrane life. - The company is also signaling that one component platform can serve industrial water, hygienic food processing and oilfield markets, which broadens the addressable market.

What's next: - Fullstar is expected to keep pushing customized core-tube designs for OEM and system-integrator customers. - Buyers in desalination, dairy and industrial wastewater treatment will likely keep testing durability, chemical resistance and flow efficiency as specifications tighten. - The company says it will continue supporting specialized formulations and geometries for demanding applications.