TM820L-400

Summary

Product identification

These are Sea Water Reverse Osmosis (RO) Elements from the TM800L series.

• Membrane Type: Cross Linked Fully Aromatic Polyamide Composite

Specific characteristics for the models are:

• TM820L-440

  • Product Flow Rate: 11,500 gpd (43.5 m³/d)
  • Salt Rejection: 99.8%
  • Membrane Area: 440 ft² (41 m²)
  • Feed Spacer Thickness: 28 mil
  • Diameter: 8”

• TM820L-400

  • Product Flow Rate: 10,400 gpd (39.4 m³/d)
  • Salt Rejection: 99.8%
  • Membrane Area: 400 ft² (37 m²)
  • Feed Spacer Thickness: 34 / 28 mil
  • Diameter: 8”

Operating limits

• Maximum Operating Pressure: 1200 psi (8.3 MPa)
• Maximum Feed Water Temperature: 113°F (45℃)
• Maximum Feed Water SDI₁₅: 5
• Feed Water Chlorine Concentration: Not detectable
• Feed Water pH Range, Continuous Operation: 2-11
• Feed Water pH Range, Chemical Cleaning: 1-12
• Maximum Pressure Drop per Element: 20 psi (0.14 MPa)
• Maximum Pressure Drop per Vessel: 60 psi (0.4 MPa)

Test conditions

The following conditions are used for performance testing:

• Feed Water Pressure: 800 psi (5.52 MPa)
• Feed Water Temperature: 77°F (25℃)
• Feed Water Concentration: 32,000 mg/l NaCl
• Recovery Rate: 8%
• Feed Water pH: 8
• Boron added: 5 mg/l (for boron rejection test)

Feed water

Feed water parameters, including operational limits:

• Concentration: 32,000 mg/l NaCl (for testing)
• Temperature: Maximum 113°F (45℃)
• pH Range:
  • Continuous Operation: 2-11
  • Chemical Cleaning: 1-12
• SDI₁₅: Maximum 5
• Chlorine Concentration: Not detectable
• It is strongly recommended to remove free chlorine and other oxidizing agents from feed water before operating the RO system.

Product water

Performance under test conditions:

• Minimum Salt Rejection: 99.5%
• Boron Rejection (typical value): 92% at pH 8 (with 5 mg/l Boron added to Feed water)
• Product Flow Rate (nominal):
  • TM820L-400: 10,400 gpd (39.4 m³/d)
  • TM820L-440: 11,500 gpd (43.5 m³/d)
• Permeate from the first hour of operation shall be discarded.

Mechanical / hydraulic

• Nominal Diameter: 8 inches
• Element Diameter: 7.9 inches (201 mm)
• Element Length: 40 inches (1,016 mm)
• End Adapter Length: 1.125 inches (29 mm)
• Maximum pressure drop per element and per vessel are listed under Operating Limits.

Operational Notes

• For recommended design range, consult the latest Toray technical bulletin, design guidelines, computer design program, or application specialist.
• Strictly follow operating limits given in the Product Information Bulletin to maintain the Limited Warranty.
• Elements are wet tested, treated with tested feed water solution, and vacuum packed in oxygen barrier bags with deoxidant.
• To prevent biological growth during system shutdown, flush Toray elements with seawater for 30-60 minutes once every two days.
• The customer is fully responsible for the effects of chemicals incompatible with the elements; their use will void the Limited 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 PDF datasheet (Dec. 2012). For contractual data, always refer to the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet