TFC-8040-HR-375 8" High Rejection, Low Pressure

Summary

Product identification

• Product Line: TFC® HR 8” ELEMENTS
• Description: High Rejection, Low Pressure RO Elements for Brackish Water
• Membrane Chemistry: Proprietary TFC® polyamide
• Membrane Type: TFC® HR membrane
• Construction: Spiral wound with fiberglass outerwrap
• Applications: High rejection for brackish water treatment

Specifications

• Model: 8040-HR-375
• Part Number: 8882234
• Permeate Flow: 10,200 gpd (38.6 m³/d)
• Chloride Rejection: 99.55 percent
• Active Membrane Area: 375 ft² (34.8 m²)
• Feed Spacer: 31 mil (0.8 mm)
• Test Conditions: 2,000 mg/l NaCl solution at 225 psi (1,550 kPa) applied pressure, 15% recovery, 77°F (25°C) and pH 7.5

Performance Note: Performance specifications are nominal values. Individual element permeate flows may vary ±15% from the values shown. Minimum chloride ion rejection is 99.2% at the specified test conditions.

Operating limits

• Typical Operating Pressure: 150 - 250 psi (1,035 - 1,725 kPa)
• Maximum Operating Pressure: 600 psi (4,140 kPa)
• Maximum Operating Temperature: 113°F (45°C)
• Maximum Cleaning Temperature: 113°F (45°C)
• Maximum Continuous Free Chlorine: <0.1 mg/l
• Allowable pH – Continuous Operation: 4 - 11
• Allowable pH – Short Term Cleaning: 2.5 - 11 (recommended to limit exposure to 4 hours, once per month)
• Maximum Differential Pressure per 40” Long Element: 10 psi (69 kPa)
• Maximum Differential Pressure Per Vessel: 60 psi (414 kPa)
• Maximum Feed Turbidity: 1 NTU (Feedwater with turbidity greater than 0.2 NTU generally results in frequent cleanings.)
• Maximum Feed SDI (15 minute test): 5
• Permeate Pressure: Should not exceed feed-concentrate pressure by more than 5 psi (34 kPa) at any time.
• Recovery: Single element recovery is approximately 15%. Maximum recovery is site and application specific.

Mechanical / hydraulic

• Model: 8040-HR-375
• Nominal Dimensions:
  • A: 40 inches (1,016 mm)
  • B: 8 inches (203 mm)
  • C: 1.125 inches (29 mm)
• Nominal Weight: 44 lbs (20 kg)
• Associated Part Numbers:
  • Interconnector: 0035260
  • O-ring: 0035464
  • Brine Seal: 0030584

Note: Dimensions are provided for reference only and should not be interpreted as accurate specifications.

Chemical Tolerance

• Chlorine: Exposure to free chlorine or other oxidizing agents (e.g., permanganate, ozone, bromine, iodine) is not recommended. The TFC-HR membrane has a free chlorine tolerance of approximately 1,000 ppm-hours based on testing at 77°F (25°C), pH 8. This tolerance may be significantly reduced if catalyzing metals (e.g., iron) are present or if pH and/or temperature are different. Sodium metabisulfite (without catalysts such as cobalt) is the preferred reducing agent. The TFC-HR membrane has a chloramine tolerance of approximately 60,000 ppm-hours in the absence of free chlorine based on testing at 77°F (25°C), pH 8.
• Cationic (Positively Charged) Polymers and Surfactants: Exposure to these chemicals during operation or cleaning is not recommended, as they may cause irreversible fouling.
• Lubricants: For element loading, use only the recommended silicone lubricant (or approved equivalent), water, or glycerin to lubricate O-rings and brine seals. The use of petroleum-based lubricants or vegetable-based oils may damage the element and void the warranty.

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

Official datasheet (PDF)

PDF datasheet