Datasheet summary
AK HR series
Engineering summary from PDF text extraction for AK HR series. Verify every value with the OEM datasheet.
Summary
Product identification
The AK HR Series features A-Series proprietary thin-film reverse osmosis (RO) membrane elements, characterized by high flux and high sodium chloride (NaCl) rejection. These elements are designed for high rejection at low operating pressures, allowing for significant energy savings with good rejection achieved at pressures as low as 100 psig (689 kPa).
They are recommended for low brackish water with salt concentration (TDS) levels up to 5,000 mg/L, producing permeate quality comparable to standard brackish membrane elements at much lower pressure.
The AK HR Series is certified to NSF/ANSI 61.
Performance Specifications
Element Performance
(Testing conditions: 500 ppm NaCl solution at 115 psi (793 kPa) operating pressure, 77°F (25°C), pH 7.5 and 15% recovery.)
- Individual flow rate may vary ±20%.
- Stabilized salt rejection after 24 hours of operation.
| Model | Average permeate flow gpd (m³/day) | Average rejection | Minimum rejection |
|---|---|---|---|
| AK-400 | 11,000 (41.6) | 99.5% | 99.0% |
| AK-440 | 12,000 (45.4) | 99.5% | 99.0% |
Mechanical / Hydraulic
Element Properties
(Element properties and parameters are indicative numbers; specific values may vary within normal manufacturing tolerances.)
| Model | Active area ft² (m²) | Outer wrap | Feed Spacer (mil) | Part number |
|---|---|---|---|---|
| AK-400 | 400 (37.2) | Fiberglass | 34 | 3056680 |
| AK-440 | 440 (40.9) | Fiberglass | 28 | 3056681 |
Dimensions and Weights
(Element properties and parameters are indicative numbers; specific values may vary within normal manufacturing tolerances.)
| Model | Type | Dimensions, inches (cm) A | Dimensions, inches (cm) B | Dimensions, inches (cm) C | Boxed Weight lbs (kg) |
|---|---|---|---|---|---|
| AK-400 | Female | 40.0 (101.6) | 1.125 (2.86) | 7.9 (20.1) | 35 (16) |
| AK-440 | Female | 40.0 (101.6) | 1.125 (2.86) | 7.9 (20.1) | 35 (16) |
Operating limits
(Element properties and parameters are indicative numbers; specific values may vary within normal manufacturing tolerances.)
- Typical Operating Pressure: 120 psi (830 kPa)
- Typical Operating Flux: 10-20 GFD (15-35 LMH)
- Maximum Operating Pressure: 600 psi (4,136 kPa)
- Maximum Temperature:
- Continuous operation: 122°F (50°C)
- Clean-In-Place (CIP): 122°F (50°C)
- pH Range:
- Optimum rejection pH: 7.0-7.5
- Continuous operation: 2.0-11.0
- Clean-In-Place (CIP): 1.0-13.0 (Refer to Cleaning Guidelines Technical Bulletin TB1194)
- Maximum Pressure Drop:
- Over an element: 15 psi (103 kPa)
- Per housing: 50 psi (345 kPa)
- Chlorine Tolerance: 1,000+ ppm-hours (dechlorination recommended)
Feed water
- NTU: < 1
- SDI₁₅: < 5
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. Contractual data must match the OEM PDF revision used on the project.
Official datasheet (PDF)
Curated from selected public technical reference material for discovery and preliminary comparison. This summary is not a substitute for a current certified manufacturer datasheet. Verify revisions and design limits before use.