Datasheet summary
Dairy-Pro 3838 NF-200-30
Engineering summary from PDF text extraction for Dairy-Pro 3838 NF-200-30. Verify every value with the OEM datasheet.
Summary
Product identification
- Product Name: Dairy-Pro™ NF-200 ELEMENTS
- Membrane Chemistry: Proprietary TFC® polyamide
- Membrane Type: NF-200 - selective rejection nanofiltration
- Molecular weight cut-off: 200 Daltons
- Construction: Sanitary spiral wound elements with controlled OD net outerwrap
- Regulatory Status: Compliant with US FDA CFR Title 21, EC Reg. No. 1935/2004, and EU Reg. No. 10/2011. Halal-certified by the Islamic Food and Nutrition Council of America (IFANCA).
- Applications: Desalting and separation of proteins, sugars and carbohydrates
- Available Options:
- Diameter: 3.8”, 7.8” or 8.0”
- Length: 38” or 39”
- Feed Spacer: 30 mil or 45 mil
Nominal Specifications
| Model | Part Number | Membrane Area ft² (m²) | Feed Spacer mil (mm) |
|---|---|---|---|
| 3838 NF-200 - 30 | 8383848 | 76 (7.1) | 30 (0.8) |
| 3839 NF-200 - 30 | 8383944 | 76 (7.1) | 30 (0.8) |
| 3838 NF-200 - 45 | 8383849 | 61 (5.7) | 45 (1.1) |
| 3839 NF-200 - 45 | 8383945 | 61 (5.7) | 45 (1.1) |
| 7838 NF-200 - 30 | 8783842 | 350 (32.5) | 30 (0.8) |
| 7838 NF-200 - 45 | 8783841 | 278 (25.8) | 45 (1.1) |
| 8038 NF-200 - 30 | 8803843 | 371 (34.5) | 30 (0.8) |
| 8038 NF-200 - 45 | 8803844 | 291 (27.0) | 45 (1.1) |
Operating limits
- Typical Operating Pressure: 200 - 450 psi (13.8 - 31.0 bar)
- Maximum Operating Pressure: 800 psi (55 bar)
- Operating Temperature Range: 40 - 122°F (5 - 50°C)
- Maximum Cleaning Temperature: 140°F (60°C)
- Allowable pH - Continuous Operation: 4.0 - 10.0
- Allowable pH - Clean-In-Place (CIP): 1.8 - 11.0
- Design Pressure Drop Per Element: 6 - 10 psi (0.4 - 0.7 bar)
- Design Pressure Drop Per Vessel: 30 - 50 psi (2.1 - 3.4 bar)
- Operating Pressure Caveat: When operating above 650 psi (45 bar), temperature should not exceed 95°F (36°C).
- Permeate Pressure: Should not exceed baseline (concentrate) pressure at any time (including online, off-line and during transition). Reverse pressure will damage the element.
- Differential Pressure:
- Maximum differential pressure limit: 10 psi (0.7 bar) per element.
- Maximum differential pressure for any length vessel: 50 psi (3.4 bar).
Feed water
- Maximum feed turbidity: 1 NTU
- Maximum feed Silt Density Index (SDI): 5.0 (15-minute test)
- Free Chlorine: KMS recommends removing residual free chlorine prior to membrane exposure to prevent premature membrane failure. Sodium metabisulfite (without catalysts such as cobalt) is the preferred chemical to eliminate free chlorine or similar oxidizers in the feed.
- Oxidizers: Iron or other catalyzing metals in the presence of oxidizers such as hydrogen peroxide or peracetic acid are known to accelerate membrane degradation.
- Cationic Polymers and Surfactants: Exposure to cationic (positively charged) polymers or surfactants is not recommended and will void the warranty, as Dairy-Pro NF-200 membranes may be irreversibly fouled.
Mechanical / hydraulic
Nominal Dimensions
| Model | A inches (mm) | B inches (mm) | C inches (mm) |
|---|---|---|---|
| 3838 | 38.0 (965) | 3.8 (96) | 0.831 (21.1) |
| 3839 | 38.8 (984) | 3.8 (96) | 0.831 (21.1) |
| 7838 | 38.0 (965) | 7.7 (197) | 1.125 (28.6) |
| 8038 | 38.0 (965) | 7.9 (201) | 1.125 (28.6) |
- Lubricants for Installation: Use only water or glycerin to lubricate seals. Petroleum or vegetable-based oils or solvents may damage the element and will void the warranty.
Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF datasheet. For contractual data, always refer to the specific OEM PDF revision used on 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.