ESPA2-4040 Hydranautics Nitto Membranes

Hydrocomponents & Technologies Inc.

$332.63

Description

Description

ESPA2-4040 Hydranautics Nitto Membranes.

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💧 Hydranautics ESPA2-4040 Brackish Water Reverse Osmosis Membrane

The Hydranautics ESPA2-4040 is a high-performance, energy-saving reverse osmosis (RO) membrane element designed specifically for brackish water applications. As part of the world-renowned ESPA (Energy Saving Polyamide) family, this 4-inch element is engineered to deliver a superior balance of high permeate flux and exceptional salt rejection while operating at significantly lower pressures than standard brackish water membranes. This performance profile translates directly into reduced energy consumption and lower operational costs for water treatment facilities.

Crafted with a specialized polyamide thin-film composite, the ESPA2-4040 is an ideal choice for municipal potable water plants, industrial process water systems, and bottling operations. It provides a nominal salt rejection rate of 99.6%, ensuring the removal of dissolved solids, silica, and other contaminants to produce high-purity water. Its robust spiral-wound design is built for durability and long-term stability, making it a reliable standard for light industrial and commercial RO systems worldwide.

SPECIFICATION	DETAILS
Model Number	ESPA2-4040
Manufacturer	Hydranautics (Nitto)
Membrane Type	Polyamide Thin-Film Composite
Element Dimensions	4.0" Diameter x 40" Length
Nominal Permeate Flow	1,900 GPD ( $7.2 \text{ m}^3/\text{d}$ )
Nominal Salt Rejection	99.6%
Minimum Salt Rejection	99.4%
Active Surface Area	$85 \text{ ft}^2$ ( $7.9 \text{ m}^2$ )
Feed Spacer Thickness	34 mil
Max Operating Pressure	600 psi (4.14 MPa)
Max Operating Temp	$113^\circ\text{F}$ ( $45^\circ\text{C}$ )
Max Feed Flow Rate	16 gpm ( $3.6 \text{ m}^3/\text{h}$ )
pH Range (Continuous)	2 – 10.6
pH Range (Cleaning)	1 – 12

Model #	Diameter x Length	GPD	Rejection	Typical Pressure
ESPA2-4040	4.0 x 40	1,900	99.60%	150