HpHT 3838 UF K328/K131 - 30

Summary

Product identification

• Product Series: HpHT HFK131 and HFK328 ELEMENTS
• Description: High pH and Temperature Cleanable Ultrafiltration Sanitary Spiral Element Series
• Membrane Chemistry: Proprietary semi-permeable polyethersulfone (PES) on a polyolefin backing material
• Membrane Type:
  • HpHT HFK-131 with observed separation range of 10,000 Daltons
  • HpHT HFK-328 with observed separation range of 5,000 Daltons
• Construction: Sanitary spiral wound element with controlled net outer wrap
• 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).
• Options:
  • Diameter: 6.3”, 6.4”, or 8.0”
  • Outer Wrap: Controlled or trimmable
  • Feed Spacer: 30 mil, 45 mil, 62 mil or 80 mil

Nominal Specifications

Membrane Area*

* Not all options are available.

Nominal Dimensions

Operating limits

• Typical Operating Pressure: 30 - 120 psi (2.1 - 8.3 bar)
• Maximum Operating Pressure: 140 psi (9.7 bar)
• Operating Temperature Range: 41 - 140°F (5 - 60°C)
  • Above 60°C (140°F), temperature change should not exceed 5°C (9°F) per minute.
• Cleaning Temperature Range: 105 - 185°F (40 - 85°C)
• Allowable pH - Continuous Operation: 2.0 - 10.0
• Allowable pH - Clean-In-Place (CIP): 1.8 - 12.5
• Design Pressure Drop Per Element:
  • 30 mil: 12-16 psi (0.8-1.1 bar)
  • 45 mil: 15-20 psi (1.0-1.4 bar)
  • 62 and 80 mil: 15-25 psi (1.0-1.7 bar)
• Design Pressure Drop Per Vessel (3 in series):
  • 30 mil: 36-45 psi (2.5-3.1 bar)
  • 45 mil: 45-60 psi (3.1-4.1 bar)
  • 62 and 80 mil: 45-75 psi (3.1-5.2 bar)
• Design Pressure Drop Per Vessel (4 in series):
  • 30 mil: 48-60 psi (3.3-4.1 bar)
  • 45 mil: 60-68 psi (4.1-4.7 bar)
• Maximum Pressure Drop above 140°F (60°C):
  • 15 psi (1.0 bar) between 60-69°C (140-157°F)
  • 13 psi (0.9 bar) between 70-79°C (158-175°F)
  • 10 psi (0.7 bar) between 80-85°C (176-185°F)
• Permeate Pressure: Should not exceed baseline (concentrate) pressure at any time. Reverse pressure will damage the membrane.
• Differential Pressure: Maximum differential pressures per element are listed, including design values for multi-element housings.

Water Quality

• Maximum Feed Turbidity: 1 NTU
• Maximum Feed SDI: 5.0 (15-minute test)

Chemical Compatibility

• Chlorine Exposure:
  • Recommended chlorine exposure time at defined conditions is 30 minutes per day.
  • Residual chlorine concentration during cleaning cycle (CIP) should be 150 ppm @ pH 10.5-11.0.
  • Chlorine concentration should never exceed 200 ppm.
  • Chlorine should only be added to cleaning solution after pH adjusted to 10.5-11.0.
  • Iron or other catalyzing metals in the presence of free chlorine or hydrogen peroxide will accelerate membrane degradation.
• Cationic Polymers and Surfactants: Not recommended for exposure during operation or cleaning, as it may cause irreversible fouling and will void the warranty.

Lubricants

• For element 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.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original OEM PDF. Contractual data must match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet