Membrane Elements

Summary

Product Identification

AXEON manufactures membrane elements for industrial, commercial, and residential applications, utilizing leading membrane film technology. All elements are shipped dry for an indefinite shelf life. AXEON also offers membrane housings designed to fit standard size membrane elements.

Membrane Series Overview:

• TF-Series: Residential Extra Low Energy Reverse Osmosis (RO) and Nanofiltration elements. Certified by NSF International against NSF/ANSI Standard 58 for material requirements only.
• HF1-Series: Commercial Low Energy RO membranes, designed for low applied pressures.
• HF4-Series: Commercial Extra Low Energy RO membranes, designed for even lower operating pressures than HF1.
• HF5-Series: Commercial Ultra Low Energy RO membranes, operating at pressures as low as 80 psi.
• HR3-Series: Commercial High Rejection RO membranes, for high salt rejection in tap and light brackish water applications.
• NF3-Series: Commercial Nanofiltration membranes, providing low operating pressures for nanofiltration applications.
• NF4-Series: Commercial Nanofiltration membranes, offering higher rejection levels at low operating pressures.

All commercial membrane elements (HF1, HF4, HF5, HR3, NF3, NF4) are Polyamide Thin-Film Composite type. HF1, HF4, HR3, NF3, NF4 feature a protective ABS shell, while HF5 has a protective tape wound exterior.

Operating Limits

For TF-Series Residential Membranes:

• Maximum Operating Temperature: 113°F (45°C)
• Maximum Operating Pressure: 150 psi (10 bar)
• Maximum Feed Flow Rate: 2 gpm (7.6 lpm)
• pH Range, Continuous Operation: 2 – 11 (Maximum temperature for continuous operations above pH10 is 95° F (35°C))

For Commercial HF1, HF4, HF5, HR3, NF3, NF4 Series Membranes:

• Membrane Type: Polyamide Thin-Film Composite
• Maximum Operating Temperature: 113°F (45°C)
• Maximum Operating Pressure: 600 psi (41 bar) (Except HF5: 400 psi / 27.58 bar)
• pH Range, Continuous Operation: 2 – 11 (Maximum temperature for continuous operations above pH10 is 95° F (35°C))
• pH Range, Short Term Cleaning (30 Min.):
  • HF1, HF4, HF5, HR3: 1 – 13
  • NF3, NF4: 1 – 12

Feed Water

Common Feed Water Specifications (for testing):

• TDS: 550 TDS Filtered (5 Micron)
• De-Chlorinated, Municipal Feed Water
• Temperature: 77 Degrees F
• pH Range: 6.5 - 7.0
• Permeate Recovery: 15%

General Feed Water Limits:

• Maximum Feed Silt Density Index (SDI): 5
• Chlorine Tolerance: 0 ppm (Presence of free chlorine and other oxidizing agents will cause premature membrane failure).

Product Water

Membrane Element Performance (Nominal Salt Rejection):

• TF-Series: 98.0%
• HF1-Series: 99.0%
• HF4-Series: 99.0%
• HF5-Series: 98.5%
• HR3-Series: 99.5%
• NF3-Series: 40.0 – 50.0%
• NF4-Series: 80.0 – 90.0%

General Performance Data:

• Permeate flow for individual elements may vary +/- 20%.
• Minimum salt rejection for most commercial elements: 96%.
• Maximum Pressure drop for each element:
  • TF-Series: 10 psi
  • HF1-Series: 15 psi
  • HF4, HF5, HR3, NF3, NF4 Series: 13 psi

Applied Pressure and Permeate Flow Rate Ranges:

• TF-Series: Applied pressure 50 psi (3.44 bar) – 65 psi (4.48 bar). Permeate flow rate 25 (3.94) – 150 (23.66) gpd (lph). Available in 1812 size.
• HF1-Series: Applied pressure 150 psi (10.34 bar). Permeate flow rate 225 (0.85) – 2500 (9.46) gpd (m³/d). Available in 2514, 2521, 2540, 4014, 4021, 4040 sizes.
• HF4-Series: Applied pressure 100 psi (6.89 bar). Permeate flow rate 225 (0.85) – 2500 (9.46) gpd (m³/d). Available in 2514, 2521, 2540, 4014, 4021, 4040 sizes.
• HF5-Series: Applied pressure 80 psi (5.52 bar) or 100 psi (6.89 bar). Permeate flow rate 600 (2.27) – 3000 (11.36) gpd (m³/d). Available in 4014, 4021, 4040 sizes.
• HR3-Series: Applied pressure 225 psi (15.51 bar). Permeate flow rate 150 (0.57) – 2200 (8.33) gpd (m³/d). Available in 2514, 2521, 2540, 4014, 4021, 4040 sizes.
• NF3-Series: Applied pressure 70 psi (4.83 bar). Permeate flow rate 200 (0.76) – 2500 (9.46) gpd (m³/d). Available in 2514, 2521, 2540, 4014, 4021, 4040 sizes.
• NF4-Series: Applied pressure 70 psi (4.83 bar). Permeate flow rate 200 (0.76) – 2000 (7.6) gpd (m³/d). Available in 2514, 2521, 2540, 4014, 4021, 4040 sizes.

Mechanical / Hydraulic

Membrane Element Sizes:

• Residential TF-Series membranes fit standard 2” x 12” residential membrane housings. Specific dimensions for TF-1812 elements are provided in the source PDF.
• Commercial membranes are available in standard commercial sizes such as 2514, 2521, 2540, 4014, 4021, 4040. Specific dimensions (A, B, C, D in inches/mm) for each series are provided in the source PDF.

Membrane Housings: AXEON Membrane Housings feature a convenient side port entry, easy-to-remove snap ring, and removable end cap. They are constructed from PVC and GTX® material.

• AXEON 2514, 2521, 2540:
  • Number of Membranes: 1
  • Permeate Port Size: 3/8” FNPT
  • Concentrate Port Size: 3/8” FNPT
  • Feed Port Size: 3/8” FNPT
• AXEON 4014, 4021, 4040:
  • Number of Membranes: 1
  • Permeate Port Size: 1/2” FNPT
  • Concentrate Port Size: 1/2” FNPT
  • Feed Port Size: 1/2” FNPT
• AXEON 4080:
  • Number of Membranes: 2
  • Permeate Port Size: 1/2” FNPT
  • Concentrate Port Size: 3/4” FNPT
  • Feed Port Size: 3/4” FNPT
• AXEON 40120:
  • Number of Membranes: 3
  • Permeate Port Size: 1/2” FNPT
  • Concentrate Port Size: 3/4” FNPT
  • Feed Port Size: 3/4” FNPT

Disclaimer: This summary is based on the extracted text and may not include all figures, footnotes, or the latest revisions. For contractual data, always refer to the official OEM PDF document revision used on your project.

Official datasheet (PDF)

Lenntech datasheet mirror