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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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.