Hydranautics
ESPA4 MAX Hydranautics Nitto ESPA Series-High Productivity Low Pressure Membranes
ESPA4 MAX Hydranautics Nitto ESPA Series-High Productivity Low Pressure Membranes
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ESPA4 MAX Hydranautics Nitto ESPA Series-High Productivity Low Pressure Membranes
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Hydranautics ESPA4 MAX Ultra-Low Energy RO Membrane
The Hydranautics (Nitto) ESPA4 MAX is an industry-leading, Ultra-Low Energy Reverse Osmosis (RO) Membrane specifically engineered to deliver maximum water production while significantly reducing operational energy costs. Utilizing advanced Composite Polyamide technology, this 8" x 40" element is designed with a maximized 440 square feet of active membrane area. This high-surface-area construction allows the ESPA4 MAX to produce an exceptionally high permeate flow rate of 13,200 GPD while operating at an ultra-low test pressure of just 100 PSI. By operating at such low feed pressures, it dramatically lowers energy consumption and reduces the operational strain on high-pressure system pumps.
Ideal for large-scale industrial water treatment, municipal drinking water applications, and specifically as a second-pass membrane in two-pass RO systems, the ESPA4 MAX delivers uncompromising water quality. It maintains a highly dependable 99.2% stabilized salt rejection rate. Built to accommodate high-volume facilities that prioritize energy savings, this membrane reduces the required physical footprint and capital costs by enabling systems to achieve desired flow rates with fewer pressure vessels, making it a highly cost-effective and reliable solution for commercial water treatment facilities.
| SPECIFICATION | DETAILS |
|---|---|
| Model Number | ESPA4 MAX |
| Manufacturer | Hydranautics (Nitto Group) |
| Membrane Type | Ultra-Low Energy RO |
| Material | Composite Polyamide |
| Permeate Flow Rate | 13,200 GPD (50.0 m³/d) |
| Stabilized Salt Rejection | 99.2% |
| Minimum Salt Rejection | 99.0% |
| Active Surface Area | 440 ft² (40.9 m²) |
| Test Pressure | 100 PSI (6.9 bar) |
| Max Operating Pressure | 600 PSI (41.4 bar) |
| Dimensions | 8.0" Diameter x 40.0" Length |
| Feed Spacer Thickness | 28 mil (26-28 mil) |
| Max Operating Temp | 113°F (45°C) |
| Model # | Diameter x Length | GPD | Rejection | Typical Pressure |
| ESPA4 MAX | 8.0 x 40 | 13,200 | 99.20% | 100 |
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