ESPA-4021 Hydranautics Nitto 150 PSI 1000 GPD 4 x 21 inch Membranes
ESPA-4021 Hydranautics Nitto 150 PSI 1000 GPD 4 x 21 inch Membranes
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PLEASE REFERENCE DATA SHEET AND TABLE BELOW
⚡ Hydranautics ESPA-4021 Energy Saving RO Membrane Element
The Hydranautics ESPA-4021 is a high-performance Reverse Osmosis (RO) membrane element designed for significant energy savings in commercial and light industrial applications. Part of the highly successful Energy Saving Polyamide (ESPA) series, this element provides exceptional salt rejection while operating at ultra-low pressures.
The 4-inch by 21-inch configuration is ideal for smaller systems, delivering a nominal permeate flow of 1,300 GPD at a low applied pressure of just 150 psi. This low-pressure requirement directly translates to lower energy consumption and reduced operational costs compared to standard brackish water RO membranes. The ESPA-4021 maintains high water quality, achieving a nominal salt rejection rate of 99.5% for brackish water sources.
Technical Specifications Summary
| SPECIFICATION | DETAILS |
| Model Number | ESPA-4021 |
| Manufacturer | Hydranautics (Nitto) |
| Membrane Type | Reverse Osmosis (RO), Energy Saving |
| Membrane Polymer | Composite Polyamide |
| Nominal Permeate Flow | 1,300 GPD (4.9 ) |
| Nominal Rejection () | 99.5% (Min 99.0%) |
| Test Conditions | 1,500 ppm NaCl, 150 psi, |
| Active Area | (3.5 ) |
| Element Size | 4.0 in D x 21 in L |
| Max Applied Pressure | 600 psi (4.14 MPa) |
| Max Operating Temp | () |
| Feed Spacer Thickness | 34 mil (0.86 mm) |
TO VIEW DATA SHEET LARGER RIGHT CLICK SHEET AND SELECT OPEN IMAGE IN NEW TAB
| Model # | Diameter x Length | GPD | Rejection | Typical Pressure |
| ESPA-4021 | 4.0 x 21 | 1,000 | 99.0% | 150 |
