JIRS LP Series Low Pressure RO Membrane Elements
1. Product Introduction
2. Application Scope
LP22-8040 (High-flow Industrial Model)
- Industrial pure water production for power, steel and chemical industries
- Desalination for bottled water, centralized commercial direct drinking water
LP21-4040 (Medium & Small Commercial Model)
- Production of bottled water, direct drinking water and food processing water
- Purified water for pharmaceutical, medical and electronic ultra-pure water systems
3. Standard Performance Specification
3.1 JIRS LP22-8040 Specification Table
| Item | Technical Data |
|---|---|
| Stabilized Rejection Rate | 99.7% |
| Permeate Flow | 10500 GPD (39.7 m³/d) |
| Active Membrane Area | 400 ft² (37.2 m²) |
| Feed Spacer Thickness | 28 mil |
| Packing Carton Size | L1080 × W216 × H232 mm |
| Connector Part No. | 3.02.09.0006 |
3.2 JIRS LP21-4040 Specification Table
| Item | Technical Data |
|---|---|
| Stabilized Rejection Rate | 99.6% |
| Permeate Flow | 2800 GPD (10.6 m³/d) |
| Active Membrane Area | 100 ft² (9.3 m²) |
| Feed Spacer Thickness | 28 mil |
| Packing Carton Size | L1079 × W117 × H127 mm |
| Connector Part No. | 3.02.09.0003 |
4. General Operating Limits (Applicable to Both Models)
| Limit Parameter | Maximum Allowable Value |
|---|---|
| Max Operating Pressure | 600 psi (4.14 MPa) |
| Max Feed Water Temperature | 45 ℃ |
| Max Inlet Flow per Element | 17 m³/h |
| Max Free Chlorine Concentration | ≤0.1 mg/L |
| Max Pressure Drop per Element | 15 psi (0.1 MPa) |
| Operating Feed Water pH Range | 2–11 |
| Chemical Cleaning pH Range | 1–13 |
| Max Feed Water SDI | SDI ≤ 5 |
5. Storage & Operation Important Instructions
- Factory Preservation
Dry membrane elements are shipped without preservation solution. Wet elements are vacuum-packed with 1.0% sodium bisulfite preservation solution; 10% propylene glycol antifreeze is added in winter.
- Long-term Storage Rules
Dry membranes must be kept wet after initial soaking. Wet membranes need to be soaked in dedicated preservation solution during long-term shutdown to avoid membrane drying and failure.
- Initial Flushing Procedure
Flush at low pressure for 15–25 minutes (overnight soaking is forbidden), then flush at high pressure for 60–90 minutes with flow ≥50% of system design flow. All permeate and concentrate water produced within the first hour of startup shall be drained completely, not recycled.
- Warranty Terms
This product comes with a 3-year standard warranty, valid only if all operating limits and guidelines in this document are strictly followed. Any chemicals harmful to the membrane are prohibited during storage and operation. JIRS shall not be liable for damages caused by improper use.
- Supplementary Notice
Product performance varies under different feed water conditions; all parameters in this document are for reference only. Complete guidelines for installation, commissioning, storage and transportation are available in the official JIRS Product Manual. Product specifications may be updated without prior notice due to technical iteration; please confirm the latest data before purchase.
