Datasheet summary
TRH-4021
Engineering summary from PDF text extraction for TRH-4021. Verify every value with the OEM datasheet.
Summary
Product identification
- Model: TR70-4021-HF & TRH-4021 (4 x 21 INCH TAPE WRAP BRACKISH ELEMENT)
- Membrane Type: Crosslinked Aromatic Polyamide, Negative Charge
- Element Configuration: Spiral Wound, Tape Wrap
- Approximate Dimensions:
- Diameter: 4'' inch (101 mm)
- Length: 21'' (533 mm)
- Permeate tube diameter: 0.75'' (19 mm)
- Permeate tube length (visible): 19'' (482 mm)
- Element body length: 3.9'' (99 mm)
Performance Specification
| Model | Description | Salt Rejection (avg.)¹´² | Product Flow Rate¹´² | Test Conditions |
|---|---|---|---|---|
| TR70-4021-F | Normal Flux | 99.4 % | 4’000 l/d (1’055 gpd) | A |
| TR70-4021-HF | High Flow | 99.4 % | 5’400 l/d (1’425 gpd) | A |
| TRH-4021 | Low Pressure, High Flow | 99.0 % | 4’700 l/d (1’240 gpd) | B |
Test Conditions:
| Parameter | Condition A | Condition B | Unit |
|---|---|---|---|
| Temperature | 25 | 25 | °C |
| Feed Solution, Concentration | 1500 | 500 | ppm NaCl |
| Feed Pressure | 15 | 7.5 | bar |
| Brine : Permeate ratio | 5 : 1 | 5 : 1 | - |
| Feed pH | 6.5 - 7.5 | 6.5 - 7.5 | - |
Notes on Performance:
- Average value for 100 elements after 1 hour operation.
- Product Flow Rate ± 15%. Salt Rejection minimum 98%.
- Minimum Performance data are for any single element.
Operating limits
- Recommended Operating Pressure: < 15.0 kg/cm² (216 psi)
- Maximum Operating Pressure: 20 kg/cm² (288 psi)
- Recommended Operating Temperature: < 35 °C (95 °F)
- Maximum Operating Temperature: 35 °C (95 °F)
- Feedwater Turbidity (SDI₁₅): < 5
- Feedwater Chlorine Concentration: 0 ppm
- pH Range, Continuous Operation: 3 - 11
- pH Range, Chemical Cleaning: 3 - 11
- Feed Flow Rate per Vessel: < 2’200 l/h (10 gpm)
- Brine Flow Rate per Vessel: > 600 l/h (2.6 gpm)
- Brine/Permeate Flow Ratio: 5 : 1
- Pressure Drop (per Element): 0.5 kg/cm² (7 psi)
- Pressure Drop (per Vessel): 1.0 kg/cm² (14 psi)
- Pressure Drop Cleaning Trigger: Element(s) must be cleaned when pressure drop increases to 1.5 times of the initial value.
Disclaimer: This summary is based on the provided text extract. It may not include all figures, footnotes, or the latest revisions found in the complete OEM PDF datasheet. Contractual data must match the specific OEM PDF revision used for your 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.