TFC-4040-FR 4" High Rejection, Fouling Resistant, Low Pressure

Summary

Product identification

• Product Name: TFC®- FR 4” ELEMENT
• Description: High Rejection, Fouling Resistant Low Pressure RO Element for Brackish Water
• Membrane Chemistry: Proprietary TFC® polyamide
• Membrane Type: TFC®-FR membrane
• Construction: Spiral wound element
• Applications: High rejection for brackish water treatment with improved fouling resistance
• Options: Fiberglass overwrap or tape overwrap (-T)
• Part Number: 8482003 (for model 4040-FR)

Specifications

• Model: 4040-FR
• Permeate Flow: 2,270 gpd (8.6 m³/d)
• Chloride Rejection: 99.55 percent (nominal)
• Active Membrane Area: 85 ft² (7.9 m²)
• Feed Spacer: 28 mil (0.7 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.
• Individual element permeate flows may vary ±15% from nominal values.
• 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)
• 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).
• Maximum Differential Pressure per Element: 10 psi (69 kPa)
• Maximum Differential Pressure per Vessel: 60 psi (414 kPa)
• Allowable pH – Continuous Operation: 4 - 11
• Allowable pH – Short Term Cleaning: 2.5 - 11 (recommended to limit exposure to extended pH range to 4 hours, once per month).
• Maximum Continuous Free Chlorine: <0.1 mg/l
• Free Chlorine Tolerance: 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 differ.
• Chloramine Tolerance: Approximately 60,000 ppm-hours in the absence of free chlorine, based on testing at 77°F (25°C), pH 8.
• Chemical Tolerance: Exposure to free chlorine, other oxidizing agents (permanganate, ozone, bromine, iodine), and cationic (positively charged) polymers or surfactants is not recommended. Sodium metabisulfite (without catalysts) is the preferred reducing agent.

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

Mechanical / hydraulic

• Nominal Dimensions (for reference only):
  • Length (A): 40 inches (1,016 mm)
  • Diameter (B): 4 inches (101.6 mm)
  • Outer Brine Seal Groove to End (C): 0.75 inches (19.0 mm)
  • Inner Brine Seal Groove to End (D): 1.0 inches (25.4 mm)
• Weight: 10 lbs (4.5 kg)
• Associated Part Numbers:
  • Interconnector: 0035267
  • O-ring: 0035458
  • Brine Seal: 0035702
• Lubricants: For element loading, use only recommended silicone lubricant (or approved equivalent), water, or glycerin for O-rings and brine seals. Petroleum-based or vegetable-based lubricants may damage the element and void the warranty.
• Recovery: Maximum recovery is site and application specific. Single element recovery is approximately 15% per element. Recovery limits should be determined using the KMS ROPRO® program.

---

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

Official datasheet (PDF)

PDF datasheet