Datasheet summary
NFS TFC 100-250Da
Engineering summary from PDF text extraction for NFS TFC 100-250Da. Verify every value with the OEM datasheet.
Summary
Product identification
This document describes Synder Filtration’s Sanitary Nanofiltration (NF) Spiral-Wound Elements, specifically the NFS series with a Molecular Weight Cutoff (MWCO) of 100-250Da. These membranes are designed for superior separation performance, offering stable flux and a wide range of rejection for monovalent and divalent ions in specialty process applications.
- Model: NFS
- Polymer: Proprietary PA TFC
- Approx. Molecular Weight Cutoff: 100-250Da
Common Applications:
- Demineralization & concentration of lactose
- Seawater sulfate removal
NF Series Benefits:
- Competitive flux compared to industry standard NF membranes
- Excellent MgSO₄ and lactose rejection
- Operates at lower pressures than Reverse Osmosis (RO) membranes while achieving excellent rejection of divalent and multivalent ions
- Greatly reduces levels of hardness, nitrates, sulfates, tannins, turbidity, color, Total Dissolved Solids (TDS), and moderate levels of salt from feed water streams
Operating limits
- Maximum Operating Pressure:
- 600psi (4,137kPa) if T <95°F (35°C)
- 435psi (3,000kPa) if T >95°F (35°C)
- Maximum Temperature: 50°C (122°F)
- pH Range @ Max Temperature: 3-9.5
- pH Range @ Ambient Temperature: 3-10.5
Cleaning Parameters:
- Maximum Temperature (Short term <30min): 40°C (104°F)
- pH Range @ Max Temperature: 2-11
- pH Range @ Ambient Temperature: 2-11
Pressure Drop:
- Maximum per Element: 15psi (103kPa)
- Maximum per Housing: 60psi (414kPa)
Chlorine Tolerance: 500ppm hours, dechlorination recommended.
Product water
- Typical Operating Flux: 30-40 GFD
- Avg. Lactose Rejection¹: 99.5%
- Avg. MgSO₄ Rejection²: 99.5%
- Avg. NaCl Rejection³: 50.0%
Test Conditions:
- ¹2% Lactose solution at 110psi (760kPa) operating pressure, 77°F (25°C)
- ²2,000ppm MgSO₄ solution at 110psi (760kPa) operating pressure, 77°F (25°C)
- ³2,000ppm NaCl solution at 110psi (760kPa) operating pressure, 77°F (25°C)
Mechanical / hydraulic
Element Dimensions & Weight
| Element Model Number | Diameter (B) in (cm) | Length (A) in (cm) | PWT ID/OD in (cm) | Tube Extension (C) in (cm) | Dry Weight lb (kg) |
|---|---|---|---|---|---|
| 1.8” 1812F | 1.8 (4.6) | 12.0 (30.5) | 0.63 (1.6) | - | 1.0 (0.5) |
| 2.5” 2540F | 2.4 (6.1) | 40.0 (101.6) | 0.63 (1.6) | - | 4.0 (1.8) |
| 2540M | 2.4 (6.1) | 40.0 (101.6) | - | 1 (2.54) (Both Ends) | 4.0 (1.8) |
| 3.8” 3838 | 3.8 (9.7) | 38.0 (96.5) | 0.83 (2.1) | - | 9.0 (4.1) |
| 3838.75 | 3.8 (9.7) | 38.8 (98.4) | 0.81 (2.1) | - | 9.0 (4.1) |
| 8” 8038 | 7.9 (20.1) | 38.0 (96.5) | 1.13 (2.9) | - | 29.0 (13.2) |
| 8040 | 7.9 (20.1) | 40.0 (101.6) | 1.13 (2.9) | - | 29.0 (13.2) |
NF MEMBRANE AREA (SQ. FT.)
| Element | Feed Spacer (in mils) | | :-------- | :---- | :---- | :---- | :---- | :---- | | | 24 | 31 | 46 | 65 | 80 | | 1812F | 4.5 | 4.0 | 2.9 | N/A | N/A | | 2540F | 38 | 30 | 22 | N/A | N/A | | 2540M | 36 | 28 | 20 | N/A | N/A | | 3838 | 100 | 87 | 68 | 52 | 43 | | 3838.75 | 104 | 89 | 69 | 53 | 44 | | 8038 | 450 | 400 | 300 | 240 | 200 | | 8040 | 450 | 400 | 300 | 240 | 200 |
RECOMMENDED ELEMENT CROSS FLOW RATE
| Element | Feed Spacer (in mils) | | :-------- | :---- | :---- | :---- | :---- | :---- | | | 24 | 31 | 46 | 65 | 80 | | 1.8” | | | | | | | m³/hr | 0.7 | 0.7 | 0.7 | 0.9 | 0.9 | | gpm | 3 | 3 | 3 | 4 | 4 | | 2.5” | | | | | | | m³/hr | 1.4 | 1.4 | 1.6 | 1.6 | 1.8 | | gpm | 6 | 6 | 7 | 7 | 8 | | 3.8” | | | | | | | m³/hr | 6 | 7 | 8 | 8 | 9 | | gpm | 26 | 29 | 33 | 36 | 38 | | 8” | | | | | | | m³/hr | 16 | 18 | 21 | 23 | 24 | | gpm | 68 | 76 | 89 | 98 | 103 |
The recommended cross flow rate will be subject to differential pressure limitations and specific applications.
Technical Notes
For element sizes not listed, the manufacturer can design an element to fit specific needs based on outer diameter (OD) or vessel/housing inner diameter (ID), element inner diameter (ID), and length. Elements are available with or without a controlled bypass tail, and additional feed spacers are also available. Trials should be conducted to determine optimal application conditions.
Disclaimer: This summary is based on the provided text extract and may not include all figures, footnotes, or the latest revisions from the official OEM PDF. 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.