KC-ULP2540 & ULP2521 Low-Pressure RO Membranes
KC-ULP2540 and KC-ULP2521 are ultra-low pressure reverse osmosis membrane elements developed for compact and decentralized RO systems treating low-salinity water. Based on aromatic polyamide technology, they provide stable permeate flow and reliable salt rejection under reduced operating pressure.
Designed for feed water with TDS up to 2,000 mg/L, these membrane elements help improve energy efficiency while supporting flexible system design. They are widely used in compact water treatment equipment, decentralized water supply systems, and small industrial RO applications.
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Key Features
- Ultra-low operating pressure for energy-efficient operation
- Stable permeate flow with reliable salt rejection
- Compact design for flexible system integration
- Optimized for low-salinity water treatment
- Suitable for decentralized and modular RO systems
- Reliable performance for continuous operation
Application
- Surface water treatment
- Groundwater purification
- Municipal drinking water treatment
- Bottled drinking water production
- Decentralized and modular RO systems
- Small industrial pure water systems
Technical Specifications& Performance
| Model | Stabilized Salt Rejection (%) | Effective Membrane Area (ft²(m²)) | Average Permeate Flow (GPD(m³/d)) |
|---|---|---|---|
| KC-ULP2540 | 99.20 | 27(2.5) | 750(2.8) |
| KC-ULP2521 | 99.20 | 14(1.3) | 400(1.5) |
Standard Test Conditions
| Testing Pressure psi (MPa) | Test Solution NaCl (ppm) | Recovery (%) | Temperature (°C) | PH |
|---|---|---|---|---|
| 150(1.03) | 1500 mg/L | 15(2540) 8(2521) | 25 | 7.5-8.0 |
Dimensions


Packaging
- Individually sealed plastic bag
- Single unit carton box
- Master cartons for multiple units
- Pallet available for export shipment
FAQ
Q1. How should I choose between KC-ULP2540 and KC-ULP2521?
Selection mainly depends on installation space, required water production, and overall system configuration. KC-ULP2540 is generally used for larger compact systems, while KC-ULP2521 is better suited to more space-limited equipment.
Q2. Can these membrane elements replace existing RO membrane brands?
When membrane dimensions and operating conditions are compatible, they can be evaluated as alternative solutions for system upgrades or supplier replacement.
Q3. Are KC-ULP2540 and KC-ULP2521 suitable for OEM equipment manufacturing?
Yes. Both models are widely integrated into customized RO equipment developed by OEM and ODM manufacturers.
Q4. Is customization available?
Customization is available for membrane performance and sheet structure based on system requirements.
