Datasheet summary
TRH-2521
Engineering summary from PDF text extraction for TRH-2521. Verify every value with the OEM datasheet.
Summary
Product identification
- Models: TR70-2521-HF & TRH-2521 (also TR70-2521-F)
- Membrane Type: Crosslinked Aromatic Polyamide, Negative Charge
- Element Configuration: Spiral Wound, Tape Wrap
- Size: 2.5 x 21 INCH
Performance Specification
| Model | TR70-2521-F | TR70-2521-HF | TRH-2521 |
|---|---|---|---|
| Description | Normal Flux | High Flow | Low Pressure, High Flow |
| Salt Rejection avg.¹,² | 99.4 % | 99.4 % | 99.0 % |
| Product Flow Rate¹,² | 1’200 l/d (315 gpd) | 1’600 l/d (420 gpd) | 1’400 l/d (370 gpd) |
| Test Conditions | A | A | B |
Test Conditions:
- Condition A:
- Temperature: 25 °C
- Feed Solution, Concentration: 1500 ppm NaCl
- Feed Pressure: 15 bar
- Brine : Permeate ratio: 5 : 1
- Feed pH: 6.5 - 7.5
- Condition B:
- Temperature: 25 °C
- Feed Solution, Concentration: 500 ppm NaCl
- Feed Pressure: 7.5 bar
- Brine : Permeate ratio: 5 : 1
- Feed pH: 6.5 - 7.5
Notes on Performance:
- ¹ Average value for 100 elements after 1 hour operation.
- ² 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: 20 kg/cm² (288 psi)
- Operating Temperature: < 35 °C (95 °F)
- Maximum: 35 °C (95 °F)
- Feedwater Turbidity (SDI₁₅): < 5
- Feedwater Chlorine Concentration: 0 ppm
- pH Range, Continuous Operation: 3 - 11 (Both feed and brine water must meet this range.)
- pH Range, Chemical Cleaning: 2 - 11
- Feed Flow Rate per Vessel: < 650 l/h (3 gpm)
- Brine Flow Rate per Vessel: > 250 l/h (1 gpm)
- Brine/Permeate Flow Ratio: 5 : 1 (Flow ratio of brine to permeate for each single element.)
- Pressure Drop (per Element): 0.3 kg/cm² (4 psi)
- Pressure Drop (per Vessel): 1.0 kg/cm² (14 psi)
- Elements must be cleaned when pressure drop increases to 1.5 times of the initial value.
Mechanical / hydraulic
The element features a serial number, identification tape, brine seal, and an anti-telescoping device.
- Overall Length: 21’’ (533 mm)
- Outer Diameter: 2.4’’ (61 mm)
- Permeate Tube Outer Diameter: 0.75’’ (19 mm)
- Permeate Tube Inner Diameter: 1’’ (25.4 mm)
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. For contractual data, always refer to the specific 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.