Dairy-MF 3838 MFK-618-NYV

Summary

Product identification

These are Microfiltration spiral-wound elements designed for food and dairy applications.

• Membrane Chemistry: Proprietary semi-permeable polyethersulfone (PES) layer on a polyester backing material.
• Membrane Type:
  • MFK™-618 with observed separation range of 0.1 micron
  • MFK™-601 with observed separation range of 0.4 micron
• Construction: Sanitary spiral wound with net outer wrap.
• Regulatory Status: Conform to USDA 3-A standards and FDA regulations (CFR Title 21).
• Options:
  • Diameter: 3.8”, 6.3”, or 8.3”
  • Feed Spacer: N (31 mil), V (46 mil), H (62 mil), F (80 mil), D (100 mil), or E (135 mil)
  • Outer wrap: Controlled (e.g., NYV) or trimmable (e.g., NYT)

Specifications

Active Membrane Area (Note: not all combinations available)

Operating limits

• Typical Operating Pressure: 30 - 120 psi (2.1 - 8.3 bar)
• Maximum Operating Pressure: 140 psi (9.7 bar)
• Permeate Pressure: Should not exceed baseline (concentrate) pressure at any time. Reverse pressure will damage the membrane.
• Typical Operating Temperature Range: 41 - 131°F (5 - 55°C)
• Maximum Operating Temperature:
  • At pH 6.0 - 7.5: 150°F (65.5°C)
  • At pH 3.5 - 6.0: 140°F (60°C)
  • At pH 2.0 - 3.5 and 7.5 – 10.0: 131°F (55°C)
• Cleaning (CIP) Temperature Range: 104 - 122°F (40 - 50°C)
• Maximum Cleaning Temperature: 122°F (50°C)
• Allowable pH - Continuous Operation: 2.0 - 10.0
• Allowable pH - Clean-In-Place (CIP): 1.8 - 11.0
• Design Pressure Drop Per Element:
  • N spacer: 5-15 psi (0.3-1.0 bar)
  • V spacer: 5-20 psi (0.3-1.4 bar)
  • H, F, D or E spacer: 10-20 psi (0.7-1.4 bar)
• Design Pressure Drop Per Vessel (3 In Series):
  • N spacer: 15-45 psi (1.0-3.1 bar)
  • V spacer: 15-60 psi (1.0-4.1 bar)
  • H, F, D or E spacer: 30-60 psi (2.1-4.2 bar)

Membrane Characteristics

• Pure Water Flux: 2.0-4.4 gfd/psi at 77°F (25°C) for both MFK-601 and MFK-618 membranes.

Water Quality for Cleaning & Diafiltration

• Turbidity: Maximum feed turbidity is 1 NTU.
• SDI: Maximum feed SDI is 5.0 (15-minute test).
• Chlorine Concentration (during cleaning): Residual chlorine concentration should be 150 ppm @ pH 10.5 or higher. Never exceed 200 ppm. Chlorine should only be added after pH adjustment to 10.5 or higher.
• Chlorine Exposure Time: Recommended chlorine exposure time is 30 minutes per day.
• Chemical Exposure Warnings:
  • Iron or other catalyzing metals in the presence of free chlorine or hydrogen peroxide will accelerate membrane degradation.
  • Cationic (positively charged) polymers or surfactants may irreversibly foul MFK membranes; exposure during operation or cleaning is not recommended and will void the warranty.

Mechanical / hydraulic

Nominal Dimensions

• Lubricants: For module 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. For contractual data, always refer to the official OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet