8040 and 4040 seawater elements (SWRO)
Hi-Tech seawater membranes are spiral-wound thin-film composite elements in the two industry-standard formats: 8040 (8" × 40") for desalination trains and 4040 (4" × 40") for marine and small SWRO systems. High-rejection grades hold up to 99.8% salt rejection at 32,000 ppm NaCl and 800 psi (55.2 bar) test conditions. Every element ships wet-tested with a serial number and datasheet.
Mastering Salinity
Indispensable for desalination plants, coastal facilities, and offshore applications. These Hi-Tech membrane elements deliver an extraordinarily high rejection performance (up to 99.8%) while maintaining operational efficiency under extreme saline conditions.
Salt Rejection
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High Rejection & Fouling Resistant
| Model | Active Area ft² (m²) | Permeate Flow GPD (m³/d) | Salt Rejection % | Feed Spacer mil | Operating Pressure psi (bar) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SW-34-4040-HRFR | 82 (7.6) | 1600 (6.1) | 99.7% | 34 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SW-34-400-HRFR | 400 (37.2) | 7400 (28.0) | 99.8% | 34 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- Active Area ft² (m²)
- 82 (7.6)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 1600 (6.1)
- Salt Rejection %
- 99.7%
- Feed Spacer mil
- 34
- Active Area ft² (m²)
- 400 (37.2)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 7400 (28.0)
- Salt Rejection %
- 99.8%
- Feed Spacer mil
- 34
Testing conditions: 32000 ppm NaCl, 25°C (77°F), 800 psi (55.2 bar), pH 7 (± 1.0), Recovery 8%
High Rejection
| Model | Active Area ft² (m²) | Permeate Flow GPD (m³/d) | Salt Rejection % | Feed Spacer mil | Operating Pressure psi (bar) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SW-28-4040-HR | 82 (7.6) | 1320 (5.0) | 99.7% | 28 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SW-28-400-HR | 400 (37.2) | 6500 (24.6) | 99.8% | 28 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- Active Area ft² (m²)
- 82 (7.6)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 1320 (5.0)
- Salt Rejection %
- 99.7%
- Feed Spacer mil
- 28
- Active Area ft² (m²)
- 400 (37.2)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 6500 (24.6)
- Salt Rejection %
- 99.8%
- Feed Spacer mil
- 28
Testing conditions: 32000 ppm NaCl, 25°C (77°F), 800 psi (55.2 bar), pH 7 (± 1.0), Recovery 8%
High Rejection & Low Energy
| Model | Active Area ft² (m²) | Permeate Flow GPD (m³/d) | Salt Rejection % | Feed Spacer mil | Operating Pressure psi (bar) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SW-28-2540-HRLE | 28 (2.6) | 680 (2.6) | 99.6% | 28 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- Active Area ft² (m²)
- 28 (2.6)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 680 (2.6)
- Salt Rejection %
- 99.6%
- Feed Spacer mil
- 28
Testing conditions: 32000 ppm NaCl, 25°C (77°F), 800 psi (55.2 bar), pH 7 (± 1.0), Recovery 8%
Extra Low Energy
| Model | Active Area ft² (m²) | Permeate Flow GPD (m³/d) | Salt Rejection % | Feed Spacer mil | Operating Pressure psi (bar) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SW-28-4040-XLE | 82 (7.6) | 1660 (6.3) | 99.6% | 28 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| SW-28-400-XLE | 400 (37.2) | 9000 (34.1) | 99.8% | 28 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- Active Area ft² (m²)
- 82 (7.6)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 1660 (6.3)
- Salt Rejection %
- 99.6%
- Feed Spacer mil
- 28
- Active Area ft² (m²)
- 400 (37.2)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 9000 (34.1)
- Salt Rejection %
- 99.8%
- Feed Spacer mil
- 28
Testing conditions: 32000 ppm NaCl, 25°C (77°F), 800 psi (55.2 bar), pH 7 (± 1.0), Recovery 8%
Parallel-Channel — Seawater · ZLD · DTRO Replacement
A spiral-wound parallel open-channel element engineered as a drop-in replacement for DTRO (disc-tube) vessels — rated to 1800 psi (120 bar) for seawater desalination, Zero Liquid Discharge, and high-TDS brine concentration, with high fouling resistance and low pressure drop.
| Model | Active Area ft² (m²) | Permeate Flow GPD (m³/d) | Salt Rejection % | Feed Spacer mil | Operating Pressure psi (bar) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| SW-34P-365-HRFR | 365 (33.9) | 4755 (18.0) | 99.5% | 34 | 800 (55.2) | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- Active Area ft² (m²)
- 365 (33.9)
- Operating Pressure psi (bar)
- 800 (55.2)
- Permeate Flow GPD (m³/d)
- 4755 (18.0)
- Salt Rejection %
- 99.5%
- Feed Spacer mil
- 34
Testing conditions: 32,000 ppm NaCl, 25°C (77°F), 800 psi (55.2 bar), pH 8, Recovery 8%