TM820A-400

Summary

Product identification

• Product Line: Sea Water RO Elements
• Models: TM820A-400, TM820A-370
• Membrane Type: Cross Linked Fully Aromatic Polyamide Composite

General Specifications

The provided table data is fragmented and difficult to associate definitively with each model beyond nominal product flow rates and membrane areas. See the official PDF for exact tabulated values. However, it appears:

• Both models feature a nominal diameter of 8”.
• Both models achieve a nominal Salt Rejection of 99.75%.
• TM820A-400:
  • Nominal Product Flow Rate: 6,000 gpd (22.7 m³/d)
  • Nominal Membrane Area: 400 ft² (37 m²)
  • Nominal Feed Spacer Thickness: 28 mil
• TM820A-370:
  • Nominal Product Flow Rate: 5,600 gpd (21.2 m³/d)
  • Nominal Membrane Area: 370 ft² (34 m²)
  • Nominal Feed Spacer Thickness: 31 mil

Standard Test Conditions and Performance

• 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
• Minimum Salt Rejection (typical value): 99.5%
• Boron Rejection: 93% at pH 8 (5 mg/l Boron added to Feed water)
• Minimum Product Flow Rate:
  • TM820A-370: 4,400 gpd (16.7 m³/d)
  • TM820A-400: 4,800 gpd (18.2 m³/d)

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: 1-13
• Maximum Pressure Drop per Element: 20 psi (0.14 MPa)
• Maximum Pressure Drop per Vessel: 60 psi (0.4 MPa)

Mechanical / hydraulic

• Dimensions (all dimensions shown in Inches (millimeter)):
  • Overall Length: 40 (1,016)
  • Overall Diameter: 7.9 (201)
  • Permeate Tube Outer Diameter: 1.125 (29)

Feed water

• It is strongly recommended to remove free chlorine and other oxidizing agents (especially with heavy metals which act as oxidation catalysts) from feed water before operating the RO system.

Product water

• Permeate from the first hour of operation shall be discarded.

Operating Information

• For the recommended design range, consult the latest technical bulletin, design guidelines, computer design program, and/or an application specialist. Failure to strictly follow the operating limits given in this Product Information Bulletin will void the Limited Warranty.
• All elements are wet tested, treated with tested feed water solution, and then vacuum packed in oxygen barrier bags with deoxidant inside.
• To prevent biological growth during system shutdown, it is recommended to perform 30-60 minutes flushing of elements with seawater once every two days.
• The customer is fully responsible for the effects of chemicals that are incompatible with the elements. Their use will void the element Limited Warranty.

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Disclaimer: This summary is based solely on the provided text extract. It may not include all figures, footnotes, or the latest revisions present in the official PDF datasheet. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet