Dairy DL3838C30

Summary

Product identification

This document describes the Dairy DL Series of sanitary nanofiltration (NF) membrane elements for dairy processing. These are D-Series proprietary thin-film NF membranes with an approximate molecular weight cut-off of 150-300 Dalton for uncharged organic molecules.

The DL membrane features:

• Minimum rejection of 96% on 2,000ppm MgSO₄ at 25°C and 110psi operating pressure.
• Preferential rejection of divalent and multivalent anions, while monovalent ion rejection depends on feed concentration and composition.
• A Durasan* Cage patented outer wrap.
• A selection of feed spacers.
• Polysulfone parts.

Applications include lactose desalting, deacidification, and demineralization of whey or UF permeate.

The Dairy DL elements comply with:

• FDA Regulations relevant sections of 21CFR
• EU Framework 1935/2004/EC
• Halal & Kosher certifications

Element Specification (Dairy DL3838C30)

• Membrane: D-Series, Thin Film Membrane (TFM*)
• Spacer: 30 mil (0.76 mm)
• Active Area: 75 ft² (7.0 m²)
• Part Number: 3062683

Mechanical / hydraulic

Dimensions and Weight (DL3838C30)

• A: 38.00 Inches (96.5 cm)
• B: 0.833 Inches (2.12 cm)
• C: 3.79 Inches (9.6 cm)
• Boxed Weight: 7 lbs (3.2 kg)

Operating limits

• Typical Operating Pressure: 70-400psi (483-2,757 kPa)
• Typical Operating Flux: 5-20 GFD (8-34 LMH)
• Clean Water Flux (CWF): 18 GFD (30 LMH) @ 110psi (CWF can vary ±25%)
• Maximum Operating Pressure: 600psi (4,137 kPa)
• Maximum Temperature: 122°F (50°C)
• pH Range: 3.0-9.0
• Maximum Pressure Drop:
  • Over an element: 15psi (103kPa)
  • Per housing: 60psi (414 kPa)
• Chlorine Tolerance: 500ppm-hours (dechlorination recommended)

CIP limits for NF elements

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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)

PDF datasheet