Hydranautics

ESPA4-LD-4040 Hydranautics Nitto 2,350 GPD at 100 PSI 4 x 40 inch Membranes

Name: ESPA4-LD-4040 Hydranautics Nitto 2,350 GPD at 100 PSI 4 x 40 inch Membranes
Brand: Hydranautics
Price: 317.04 USD
Availability: InStock

$317.04 USD

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PLEASE REFERENCE DATA SHEET & TABLES BELOW

Hydranautics ESPA4-LD-4040 Reverse Osmosis Membrane

Product Description

The Hydranautics ESPA4-LD-4040 is a professional-grade 4-inch by 40-inch Reverse Osmosis (RO) element from the acclaimed Energy-Saving Polyamide (ESPA) series. Manufactured by Hydranautics (a Nitto Group Company), this low-energy membrane is specifically designed for brackish water and industrial applications where achieving high salt rejection at ultra-low operating pressures is crucial.

The ESPA4-LD is a standard choice for two-pass RO systems or applications that demand exceptional water quality, as it boasts a high nominal salt rejection of $99.2\%$ (minimum $99.0\%$ ). It delivers a permeate flow of $2,350 \text{ GPD}$ while operating at a mere $100 \text{ PSI}$ test pressure, leading to significant savings on energy costs.

Featuring Low Differential (LD) Technology and a 34 mil feed spacer, the element actively minimizes colloidal fouling. This patented design ensures consistently low feed pressures, extends the time between required chemical cleanings, and ultimately increases the longevity and reliability of the membrane.

Specifications Table

Characteristic	Specification	Units / Notes
Manufacturer	Hydranautics (Nitto)	-
Model Number	ESPA4-LD-4040	-
Product Type	Low-Energy Brackish RO	Energy-Saving Polyamide (ESPA)
Size (Dia. x Length)	4 x 40	Inch
Nominal Permeate Flow	2,350 (8.90)	GPD ( $m^3/\text{d}$ )
Nominal Salt Rejection	99.2	$\%$
Minimum Salt Rejection	99.0	$\%$
Active Membrane Area	80 (7.43)	$\text{ft}^2 (\text{m}^2)$
Membrane Polymer	Composite Polyamide	-
Technology	Low Differential (LD)	Minimizes colloidal fouling
Max Applied Pressure	600 (4.14)	PSI (MPa)
Test Pressure	100 (0.7)	PSI (MPa)