4" x 40" | 2000 GPD | 150 psi | 99.6% Rej. | Hydranautics ESPA Low Pressure Membrane (Replaces ESPA2-4040)

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Brand Hydranautics

Hydranautics Membrane Elements
Hydranautics ESPA Series RO Membrane Elements

ESPA2-LD-4040 Ultra-Low Energy 4" x 40" Reverse Osmosis Membrane Element

Hydranautics ESPA2-LD-4040 membrane provides optimum salt rejection and permeate flows and features Hydranautics Low Differential LD Technlogy to minimize colloidal fouling when used with conventional pre-treatment equipment. Hydranautics ESPA2-LD-4040 membranes offer consistently low feed pressures and longer intervals between cleanings.

ESPA2-LD-4040 membranes are commonly chosen when lower permeate TDS and lower feed pressures are needed.  Offering the highest energy efficiency at lowest costs, ESPA2 elements are used in large municipal wastewater reclamation plants.

ESPA2-LD-4040 is the replacement for Hydranautics ESPA2-4040 membrane element, which has been discontinued by the manufacturer.


ESPA2-LD-4040 Specifications

Manufacturer Model: ESPA2-LD-4040
Brand:  Hydranautics Nitto
Replaces Model: Hydranautics ESPA2-4040
Permeate Flow: 2,000 gpd (7.57m3/day)
Salt Rejection:  99.6% (99.4% Minimum)
Test Feed Pressure: 150 psi (1.03 MPa)
Test Temperature: 77°F (25°C)
Test Recovery: 15%
Test pH Range: 6.5 to 7.0 pH
Test Feed: 1500 ppm NaCl Solution
Configuration:  Low Fouling Spiral Wound
Membrane Polymer: Composite Polyamide
Membrane Active Area: 80 ft2 (7.4 m2)
Feed Spacer: 34 mil (0.864 mm)

Product Specifications for Hydranautics Membranes