TM820M-400

Summary

Product identification

• Model: TM820M-400
• Type: Sea Water RO Element
• Membrane Type: Cross Linked Fully Aromatic Polyamide Composite
• Element Diameter: 8 inches (7.9 inches / 201 mm nominal)

Operating limits

• Maximum Operating Pressure: 1200 psi (8.3 MPa)
• Maximum Feed Water Temperature: 113°F (45°C)
• 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)

Feed water

Standard Test Conditions:

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

Product water

• Nominal Product Flow Rate: 7,000 gpd (26.5 m³/d)
• Minimum Product Flow Rate: 5,600 gpd (21.0 m³/d) (at 95% boron rejection)
• Salt Rejection: 99.8%
• Minimum Salt Rejection: 99.5%
• Boron Rejection (typical value): 99.5% (at 95% rejection, pH 8, 5mg/l Boron added to Feed water)

Mechanical / hydraulic

• Membrane Area: 400 ft² (37 m²)
• Feed Spacer Thickness: 34 mil
• Dimensions:
  • Length: 40 inches (1,016 mm)
  • Diameter: 7.9 inches (201 mm)
  • Permeate Tube Diameter: 1.125 inches (29 mm)

Operating Information / Notes

• Consult the latest Toray technical bulletin, design guidelines, computer design program, and/or an application specialist for recommended design ranges.
• Failure to strictly follow the operating limits will nullify the Limited Warranty.
• Elements are wet tested, treated with a tested feed water solution, and vacuum packed in oxygen barrier bags with deoxidant.
• To prevent biological growth during system shutdown, it is recommended to flush Toray elements with seawater for 30-60 minutes once every two days.
• The presence of free chlorine and other oxidizing agents (especially with heavy metals as oxidation catalysts) in the feed water will cause unexpected membrane oxidation. It is strongly recommended to remove these oxidizing agents before operating the RO system.
• Permeate from the first hour of operation shall be discarded.
• The customer is fully responsible for the effects of chemicals incompatible with the elements. Their use will void the element Limited Warranty.

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Disclaimer: This summary is based on the provided text extract. The original PDF may contain additional figures, footnotes, or revisions not included here. For contractual data, always refer to the specific OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet