TFC-4040-SW 4" High Rejection

Summary

Product identification

This document describes the Fluid Systems® TFC®-SW 4” Element, a high rejection, seawater reverse osmosis (RO) element.

• Membrane Chemistry: Proprietary TFC® polyamide
• Membrane Type: TFC®-SW membrane
• Construction: Spiral wound with fiberglass outerwrap
• Applications: Seawater desalination

Model 4040-SW Specifications:

• Part Number: 8182000
• Permeate Flow: 1,330 gpd (5.0 m³/d)
• Chloride Rejection: 99.75 percent
• Active Membrane Area: 74 ft² (6.9 m²)
• Feed Spacer: 31 mil (0.8 mm)

Test Conditions for Specifications: 32,800 mg/l NaCl solution (isosmotic to ASTM standard seawater) at 800 psi (5,520 kPa) applied pressure, 7% 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. System performance should be predicted using KMS ROPRO® software. Element performance is based on the nominal values shown. System operating data should be normalized and key performance parameters tracked using KMS NORMPRO® software.

Operating limits

• Typical Operating Pressure: 750 - 950 psi (5,175 - 6,555 kPa)
• Maximum Operating Pressure: 1,200 psi (8,275 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 (exposure to extended pH range recommended to be limited to 4 hours, once per month)
• Maximum Differential Pressure Per Element: 10 psi (69 kPa)
• 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 (on-line, off-line and during transition).
• Recovery: Maximum recovery is site and application specific. Single element recovery is approximately 7%. Recovery limits should be determined using KMS ROPRO program.

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): 5.0
• Maximum Continuous Free Chlorine: <0.1 mg/l
• Chemical Tolerance:
  • Chlorine: Exposure of TFC-SW membrane to free chlorine or other oxidizing agents such as permanganate, ozone, bromine, and iodine is not recommended. The TFC-SW 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 such as iron are present or if the pH and/or temperature are different. Sodium metabisulfite (without catalysts such as cobalt) is the preferred reducing agent. The TFC-SW 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 Polymers and Surfactants: TFC-SW membrane may be irreversibly fouled if exposed to cationic (positively charged) polymers or surfactants. Exposure to these chemicals during operation or cleaning is not recommended.
  • 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-based oils may damage the element and void the warranty.

Mechanical / hydraulic

Nominal Dimensions and Weight for Model 4040-SW:

• A (length): 40 inches (1,016 mm)
• B (diameter): 4 inches (101.6 mm)
• C: 0.75 inches (19.0 mm)
• D: 1.0 inches (25.4 mm)
• Weight: 10 lbs (4.5 kg)
• Associated Part Numbers:
  • Interconnector: 0035267
  • O-ring: 0035458
  • Brine Seal: 0035702

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

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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