TMG20D-400

Summary

Product identification

• Membrane Type: Cross Linked Fully Aromatic Polyamide Composite
• Product Series: TMG(D)
• Key Features: Ultra low pressure BWRO (Brackish Water Reverse Osmosis), enhanced chemical tolerance.

Performance Specifications (Nominal)

Performance is based on the specified test conditions.

• TMG10D:
  • Diameter: 4”
  • Membrane Area: 87 ft² (8 m²)
  • Salt Rejection: 99.7%
  • Product Flow Rate: 2,850 gpd (10.8 m³/d)
  • Feed Spacer Thickness: 34 mil
• TMG20D-400:
  • Diameter: 8”
  • Membrane Area: 400 ft² (37 m²)
  • Salt Rejection: 99.7%
  • Product Flow Rate: 12,100 gpd (45.8 m³/d)
  • Feed Spacer Thickness: 34 mil
• TMG20D-440:
  • Diameter: 8”
  • Membrane Area: 440 ft² (41 m²)
  • Salt Rejection: 99.7%
  • Product Flow Rate: 13,300 gpd (50.3 m³/d)
  • Feed Spacer Thickness: 28 mil

Test Conditions for Nominal Performance

• Feed Water Pressure: 150 psi (1.03 MPa)
• Feed Water Temperature: 77°F (25℃)
• Feed Water Concentration: 2000 mg/L NaCl
• Recovery Rate: 15%
• Feed Water pH: 7

Guaranteed Minimum Performance

• Minimum Salt Rejection: 99.5%
• Minimum Product Flow Rate:
  • TMG10D: 2,400 gpd (9.1 m³/d)
  • TMG20D-400: 10,300 gpd (39.0 m³/d)
  • TMG20D-440: 11,200 gpd (42.4 m³/d)

Mechanical / Hydraulic

• Dimensions:
  • Element length (all models): 40 inches (1,016 mm)
  • TMG10D diameter: 4 inches (101 mm)
  • TMG20D-400 and TMG20D-440 diameter: 7.9 inches (201 mm)
  • Centerpipe for TMG20D series: 1.125 inches (29 mm)
• The TMG20D series (TMG20D-400 and TMG20D-440) are supplied only with a 29 mm centerpipe.

Operating Limits

• Maximum Operating Pressure: 600 psi (4.1 MPa)
• Maximum Feed Water Temperature: 113°F (45℃)
• Maximum Feed Water SDI₁₅: 5
• Feed Water Chlorine Concentration: < 0.1 ppm
• Feed Water pH Range (Continuous Operation): 2–11
• Feed Water pH Range (Chemical Cleaning): 1–13
• Maximum Pressure Drop per Element: 15 psi (0.10 MPa)
• Maximum Pressure Drop per Vessel: 50 psi (0.34 MPa)
• Recommended Process/Operation Pressure: < 2.0 MPa
  • Ultra-low pressure elements perform best with low salinity brackish water.
  • The recommended pressure range should be maintained even at low temperatures.

Storage and Handling Recommendations

• Elements are wet tested and treated with a 1% by weight sodium bisulfite storage solution, then vacuum packed.
• Alternatively, elements are treated with tested feed water solution and vacuum packed with deoxidant.
• For short-term storage, shipment, or system shutdown, immerse elements in a protective solution of 500–1,000 ppm food-grade sodium bisulfite dissolved in permeate to prevent biological growth.
• Remove free chlorine and other oxidizing agents (especially in the presence of heavy metals) from feed water before RO system operation to prevent oxidation damage, which is not covered by warranty.
• Discard permeate from the first hour of operation.
• Using chemicals incompatible with the elements will void the Limited Warranty.

Disclaimer

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

Official datasheet (PDF)

PDF datasheet