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ESPA-2521 Hydranautics / Nitto Membranes 150 PSI 350 GPD 2.5 x 21 inch High Productivity Low Pressure Membranes
ESPA-2521 Hydranautics / Nitto Membranes 150 PSI 350 GPD 2.5 x 21 inch High Productivity Low Pressure Membranes

ESPA-2521 Hydranautics / Nitto Membranes 150 PSI 350 GPD 2.5 x 21 inch High Productivity Low Pressure Membranes

Hydrocomponents & Technologies Inc.

Description

ESPA-2521 Hydranautics / Nitto Membranes 150 PSI 350 GPD 2.5 x 21 inch High Productivity Low Pressure Membranes

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PLEASE REFERENCE DATA SHEET AND TABLE BELOW

 

🔋 Hydranautics ESPA-2521 Energy Saving RO Membrane Element (2.5" x 21")

The Hydranautics ESPA-2521 is a high-efficiency Reverse Osmosis (RO) membrane element designed for compact commercial and point-of-use systems where energy consumption is a primary concern. Belonging to the Energy Saving Polyamide (ESPA) series, this membrane delivers high salt rejection while requiring significantly lower operating pressure than conventional RO membranes.

The 2.5-inch diameter by 21-inch length configuration is standard for small commercial or specialty applications, offering a nominal permeate flow of 650 GPD. This element operates optimally at just 150 psi, allowing systems to utilize smaller, lower-power pumps. Constructed with a composite polyamide, the ESPA-2521 maintains excellent water quality, achieving a nominal salt rejection rate of 99.5% for brackish water sources.

 

SPECIFICATION DETAILS NOTES
Model Number ESPA-2521 Smallest diameter element in the ESPA series.
Manufacturer Hydranautics (Nitto) Energy Saving Polyamide (ESPA) technology.
Membrane Type Reverse Osmosis (RO) Low pressure, high rejection.
Nominal Permeate Flow 650 GPD (2.5 ) Nominal flow at test pressure.
Nominal Rejection () 99.5% (Min 99.0%) High salt rejection at ultra-low pressure.
Test Conditions 1,500 ppm NaCl, 150 psi, Standard conditions for the ESPA series.
Active Area (1.8 ) Active membrane surface area.
Element Size 2.5 in D x 21 in L Standard size for commercial housing.
Max Applied Pressure 600 psi (4.14 MPa) Maximum limit for continuous operation.


TO VIEW DATA SHEET LARGER RIGHT CLICK SHEET AND SELECT OPEN IMAGE IN NEW TAB

 

 

Model # Diameter x Length GPD Rejection Typical Pressure
ESPA-2521 2.5 x 21 350 98% 150


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