TFC 8822 XR-400

Summary

Product identification

• Product Name: FLUID SYSTEMS® TFC® - XR 8” ELEMENT
• Description: Extra High Rejection, Brackish Water, RO Elements
• Membrane Chemistry: Proprietary TFC polyamide
• Membrane Type: TFC-XR membrane
• Construction: Spiral wound with fiberglass outerwrap
• Applications: Extra high rejection for brackish water treatment
• Options: 40” (1,016 mm) length, with standard or high area construction, or 60” (1,524 mm) Magnum® length

Specifications

Test Conditions: 2,000 mg/l NaCl solution at 325 psi (2,240 kPa) applied pressure, 15% recovery (20% recovery for Magnum® elements), 77°F (25°C), and pH 7.5.

Performance Note: Individual element permeate flows may vary +20/-15% from nominal values. Minimum MgSO₄ rejection is 99.4% at the stated test conditions.

Operating limits

• Typical Operating Pressure: 225-450 psi (1,550 – 3,100 kPa)
• Maximum Operating Pressure: 600 psi (4,140 kPa)
• Maximum Operating Temperature: 113°F (45°C)
• Maximum Cleaning Temperature: 113°F (45°C)
• Allowable pH (continuous operation): 4 – 11
• Allowable pH (short term cleaning): 2.5 – 11
• Maximum Differential Pressure per Element: 10 psi (69 kPa) for a 40” (1,016 mm) element, 15 psi (104 kPa) for a 60” (1,524 mm) element
• Maximum Differential Pressure per Vessel: 60 psi (414 kPa)
• Permeate Pressure: Should not exceed feed-concentrate pressure by more than 5 psi (34 kPa) at any time.
• Recovery: Approximately 15% for 40” (1,016 mm) elements and 20% for 60” (1,524 mm) elements. Maximum recovery is site and application specific.

Feed water

• 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
• Maximum Continuous Free Chlorine: <0.1 mg/l

Chemical Tolerance

• Chlorine/Oxidizing Agents: Intentional exposure to free chlorine or other oxidizing agents (e.g., permanganate, ozone, bromine, iodine) is not recommended.
  • Free chlorine tolerance: Approximately 1,000 ppm-hours (based on testing at 77°F (25°C), pH 8). Tolerance may be reduced by catalyzing metals (e.g., iron), or different pH/temperature. Sodium metabisulfite (without catalysts such as cobalt) is the preferred reducing agent.
  • Chloramine tolerance: 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: May cause irreversible fouling. Exposure during operation or cleaning is not recommended.

Mechanical / hydraulic

• Feed Spacer Thickness: 31/28 mil (0.8/0.7 mm)

Dimensions and Weight

Note: Dimensions A, B, C are not defined in the provided text. See the official PDF for exact tabulated values.

Lubricants

• For element loading, use only approved silicone lubricant, water, or glycerin to lubricate O-rings and brine seals.
• The use of petroleum-based lubricants or vegetable 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. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet