Hydranautics ESPA Series Membranes
Hydranautics ESPA (Energy-Saving Polyamide) RO membranes continue to meet the ever-increasing demands of the water treatment industry. Industrial users worldwide have made ESPA their choice for high productivity and salt rejection. There's an ESPA solution to satisfy even the most challenging water treatment needs with exceptional performance, productivity and savings.
Benefits
- Up to 99.6% Nominal Rejection
- Lower pressure for lower CAPEX/OPEX
- High Productivity
- Longer Membrane Life due to Low Biological and Colloidal Fouling
- Higher rejection for impurities including Silica and Boron
- Greater Tolerance to High pH Cleaning
Details
ESPA1 Series Hydranautics RO Membrane Elements
High Productivity, energy saving reverse osmosis membranes.
|
Model No. |
Size |
Flow Rate |
Test Pressure (psi) |
Nominal Salt Rejection (%) |
Minimum Salt Rejection (%) |
|
|
gpd |
m³/d |
|||||
|
ESPA-2514 |
2.5” × 14” |
250 |
0.9 |
150 |
99.4 |
98.0 |
|
ESPA-2521 |
2.5” × 21” |
350 |
1.3 |
150 |
99.4 |
98.0 |
|
ESPA-2540 |
2.5” × 40” |
750 |
2.8 |
150 |
99.4 |
98.0 |
|
ESPA-4014 |
4” × 14” |
500 |
1.9 |
150 |
99.4 |
98.0 |
|
ESPA-4021 |
4” × 21” |
1,000 |
3.8 |
150 |
99.4 |
98.0 |
|
ESPA1-LD-4040 |
4” × 40” |
2,450 |
9.27 |
150 |
99.4 |
99.2 |
|
ESPA1 |
8” × 40” |
12,000 |
45.4 |
150 |
99.3 |
99.0 |
ESPA2 Series Hydranautics RO Membrane Elements
ESPA2 product family offers new technology for higher productivity and rejection; minimizes bio-fouling & colloidal fouling and features and enhanced cleanability. The ESPA2 MAX features increased surface area for higher permeate production.
|
Model No. |
Size |
Flow Rate |
Test Pressure (psi) |
Nominal Salt Rejection (%) |
Minimum Salt Rejection (%) |
|
|
gpd |
m³/d |
|||||
|
ESPA2-LD-4040 |
4” × 40” |
2,000 |
7.6 |
150 |
99.6 |
99.4 |
|
ESPA2 |
8” × 40” |
9,000 |
34.1 |
150 |
99.6 |
99.5 |
|
ESPA2-LD |
8” × 40” |
10,000 |
37.9 |
150 |
99.6 |
99.5 |
|
ESPA2MAX |
8” × 40” |
12,000 |
45.4 |
150 |
99.6 |
99.5 |
ESPA3 Series Hydranautics RO Membrane Elements
ESPA3 Series membrane elements offer the highest product water flow rates of the Hydranautics ESPA family of membrane elements.
|
Model No. |
Size |
Flow Rate |
Test Pressure (psi) |
Nominal Salt Rejection (%) |
Minimum Salt Rejection (%) |
|
|
gpd |
m³/d |
|||||
|
ESPA3-4040 |
4” × 40” |
3,000 |
11.4 |
150 |
98.5 |
98.0 |
ESPA4 Series Hydranautics RO Membrane Elements
ESPA 4 Series membrane elements feature a lower operating pressure, resulting in lower operating costs, while maintaining high productivity and a minimum salt rejection of 99%.
|
Model No. |
Size |
Flow Rate |
Test Pressure (psi) |
Nominal Salt Rejection (%) |
Minimum Salt Rejection (%) |
|
|
gpd |
m³/d |
|||||
|
ESPA4-LD-4040 |
4” × 40” |
2,500 |
9.5 |
100 |
99.2 |
99.0 |
|
ESPA4 |
8” × 40” |
12,000 |
45.4 |
100 |
99.2 |
99.0 |
|
ESPA4-LD |
8” × 40” |
12,000 |
45.4 |
100 |
99.2 |
99.0 |
|
ESPA4MAX |
8” × 40” |
13,200 |
50.0 |
100 |
99.2 |
99.0 |
ESPAB Series Boron Removal Hydranautics RO Membrane Elements
ESPA B boron removing elements provide a new option for communities where boron levels are naturally high or for manufacturers challenged by boron contamination issues.
|
Model No. |
Size |
Flow Rate |
Test Pressure (psi) |
Salt Rejection (%) |
Ave. Boron Rej. (%@10psi) |
||
|
gpd |
m³/d |
Nominal |
Minimum |
||||
|
ESPABMAX |
8” × 40” |
9,000 |
34.1 |
150 |
99.3 |
99 |
99.6 |
Please see product specification sheets for the test conditions under which the stated performance are based, and exact membrane element dimensions.
Features
- Enhanced Membrane Chemistry for Increased Chemical Resistance
- Innovative Spacer Design to Minimize Trapping of Small Colloidal Particles
- HYDRAblock Technology Providing Biostatic Properties to Minimize Proliferation of Biological Fouling
- Proprietary Vented Seal Carrier to Eliminate Pressure-Shock Damage During System Startup
Applications
- Municipal Potabale Water
- Municipal Wastewater Plants
- Bottling Operations
- Light Industrial Applications
Parts
Related Products
- PVC Pressure Vessel Membrane Housings
- Stainless Steel Pressure Vessel Membrane Housings
- CodeLine FRP Pressure Vessel Membrane Housings
- PROTEC FRP Membrane Housing Pressure Vessels
- Membrane Cleaning Cartridges
- Membrane Cleaning Chemicals
Retired Hydranautics Membranes - ESPA Membranes Cross Reference
The below ESPA membranes have been discontinued by Hydranautics. Listed below are the manufacturing specifications of the discontnued models (for reference only) and the recommended replacements.
|
Obsolete Hydranautics Model No.
|
Recommended Replacement
|
Original (Obsolete) Hydranautics Membrane Specifications for Reference Only |
||||
|
Size |
Flow Rate |
Test Pressure (psi) |
Nominal Salt Rejection (%) |
|||
|
gpd |
m³/d |
|||||
|
ESPA1-4040 |
ESPA1-LD-4040 |
4” × 40” |
2,500 |
9.5 |
100 |
99.2 |
|
ESPA2-4040 |
ESPA2-LD-4040 |
4” × 40” |
1,900 |
7.2 |
150 |
99.6 |
|
ESPA4-4040 |
ESPA4-LD-4040 |
4” × 40” |
2,500 |
9.5 |
100 |
99.2 |
|
ESPA3 |
ESPA4-LD |
8” × 40” |
14,000 |
53.0 |
150 |
98.5 |
Literature
- ESPA-4021 Data Sheet
- ESPA1-4040 Data Sheet
- ESPA1 Data Sheet
- ESPA2-4040 Data Sheet
- ESPA2-LD-4040 Data Sheet
- ESPA2 Data Sheet
- ESPA2-LD Data Sheet
- ESPA2MAX Data Sheet
- ESPA3-4040 Data Sheet
- ESPA3 Data Sheet
- ESPA4-4040 Data Sheet
- ESPA4 Data Sheet
- ESPABMAX Data Sheet
- ESPA2-LD Brochure
- Hydranautics Membranes Brochure
Contact us
for a quote or for any additional information
or call us at 1.800.321.9321
