Dairy-UF 3838 HFM-180-VYV

Summary

Product identification

These are Sanitary Ultrafiltration (UF) Spiral Elements.

• Description: Sanitary Ultrafiltration Spiral Elements
• Membrane Chemistry: Proprietary semi-permeable polyvinylidene difluoride (PVDF)
• Membrane Type: HFM-180 with observed separation range of 100,000 daltons
• Construction: Sanitary spiral wound element with polysulfone permeate tube and net outer wrap
• Regulatory Status: Compliant with US FDA CFR Title 21.
• Options:
  • Diameter: 3.8”, 4.3”, 6.3”, or 8.3”
  • Length: 33” or 38”
  • Feed Spacer: N (31 mil), V (46 mil) or F (80 mil)
  • Outer wrap: Controlled (e.g. NYV) or trimmable (e.g. NYT)
• Active Membrane Area:
  • 3838 HFM-180
    • VYV/T Spacer (46 mil): 49 ft² (4.6 m²)
  • 4333 HFM-180
    • VYV/T Spacer (46 mil): 66 ft² (6.1 m²)
  • 6338 HFM-180
    • NYV/T Spacer (31 mil): 208 ft² (19.4 m²)
    • VYV/T Spacer (46 mil): 169 ft² (15.7 m²)
    • FYV/T Spacer (80 mil): 114 ft² (10.6 m²)
  • 8338 HFM-180
    • VYV/T Spacer (46 mil): 290 ft² (26.9 m²)

Operating limits

• Typical Operating Pressure: 30 - 120 psi (2.1 - 8.3 bar)
• Maximum Operating Pressure: 140 psi (9.7 bar)
• Recommended Operating Temperature Range: 41 - 130°F (5 - 54°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: 130°F (54°C)
• Cleaning Temperature Range: 105 - 130°F (40 - 54°C)
• Allowable pH - Continuous Operation: 2.5 - 10.5
• Allowable pH - Clean-In-Place (CIP): 1.5 - 11.0
• Permeate Pressure: Should not exceed baseline (concentrate) pressure at any time (including on-line, off-line and during transition). Reverse pressure will damage the membrane.
• Differential Pressure:
  • Maximum differential pressures per element are listed on the front of this document, including design values for multi-element housings.
  • Design Pressure Drop Per Element:
    • N spacer: 12-15 psi (0.8-1.0 bar)
    • V spacer: 15-20 psi (1.0-1.4 bar)
    • H or F spacer: 15-25 psi (1.0-1.7 bar)
  • Design Pressure Drop Per Vessel (3 in series):
    • N spacer: 36-45 psi (2.5-3.1 bar)
    • V spacer: 45-60 psi (3.1-4.1 bar)
    • H or F spacer: 45-75 psi (3.1-5.2 bar)
  • Design Pressure Drop Per Vessel (4 in series):
    • N spacer: 48-60 psi (3.3-4.1 bar)
    • V spacer: 60-75 psi (4.1-5.2 bar)

Membrane Characteristics

• Material: The membrane used consists of a semipermeable polyvinylidene difluoride (PVDF) layer cast on backing material.
• Pure water flux: 2.0-4.0 gfd/psi (50-100 l/m²/h/bar) at 77°F (25°C).

Chemical considerations

• Water Quality for Cleaning & Diafiltration: Refer to KMS "Water Quality Guidelines for CIP and Diafiltration" for detailed information.
• Chlorine and Chemical Exposure:
  • Adherence to cleaning and sanitizing procedures, including chemical concentrations, pH, temperature, and exposure time, is necessary for maximum element life.
  • Recommended chlorine exposure time at defined conditions is 30 minutes per day.
  • Residual chlorine concentration during cleaning cycle (CIP) should be 150 ppm @ pH 10.5 or higher.
  • Chlorine concentration should never exceed 200 ppm.
  • Chlorine should only be added to the cleaning solution after the pH has been adjusted to 10.5 or higher.
  • Iron or other catalyzing metals in the presence of free chlorine or hydrogen peroxide (H₂O₂) will accelerate membrane degradation.
  • Sanitizing should be done only after a complete cleaning cycle and with water of acceptable quality.
• Cationic Polymers and Surfactants: HFM-180 membranes may be irreversibly fouled if exposed to cationic (positively charged) polymers or surfactants. Exposure to these chemicals during operation or cleaning is not recommended and will void the warranty.
• Lubricants: For element installation, use only water or glycerin to lubricate seals. The use of petroleum or vegetable-based oils or solvents may damage the element and will void the warranty.

Mechanical / hydraulic

• Nominal Dimensions:
  • 3838 HFM-180
    • Length (A): 38.0 inches (965 mm)
    • Diameter (B): 3.8 inches (96 mm)
    • Permeate tube OD (C): 0.831 inches (21.1 mm)
  • 4333 HFM-180
    • Length (A): 33.0 inches (838 mm)
    • Diameter (B): 4.3 inches (109 mm)
    • Permeate tube OD (C): 0.831 inches (21.1 mm)
  • 6338 HFM-180
    • Length (A): 38.0 inches (965 mm)
    • Diameter (B): 6.3 inches (160 mm)
    • Permeate tube OD (C): 1.138 inches (28.9 mm)
  • 8338 HFM-180
    • Length (A): 38.0 inches (965 mm)
    • Diameter (B): 8.3 inches (211 mm)
    • Permeate tube OD (C): 1.138 inches (28.9 mm)
  • Note: Dimensions are provided for reference only and should not be interpreted as accurate specifications.

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)

PDF datasheet