TFC 4040-ULP

Summary

Product identification

• Product Name: FLUID SYSTEMS® TFC®- ULP® 4” ELEMENT
• Description: Ultra Low Pressure RO Element
• Membrane Chemistry: Proprietary TFC® polyamide
• Membrane Type: TFC®-ULP® membrane
• Construction: Spiral wound element
• Applications: Ultra low pressure for light industrial and potable water production
• Options: Fiberglass overwrap or tape overwrap (-T)

Specifications

Model 4040-ULP (Part Number: 8482002)

• Permeate Flow: 1,800 gpd (6.8 m³/d)
• Chloride Rejection: 98.65 percent
• Active Membrane Area: 85 ft² (7.9 m²)
• Feed Spacer: 28 mil (0.7 mm)

Model 4040-ULP-T (Part Number: 8404008)

• Permeate Flow: 1,800 gpd (6.8 m³/d)
• Chloride Rejection: 98.65 percent
• Active Membrane Area: 85 ft² (7.9 m²)
• Feed Spacer: 28 mil (0.7 mm)

Test Conditions: 2,000 mg/l NaCl solution at 125 psi (860 kPa) applied pressure, 15% recovery, 77°F (25°C) and pH 7.5.

Operating limits

• Typical Operating Pressure: 100 - 175 psi (690 - 1,208 kPa)
• Maximum Operating Pressure: 350 psi (2,400 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 (exposure 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) for FRP overwrap, 30 psi (207 kPa) for tapewrap elements
• Maximum Feed Turbidity: 1 NTU (note: >0.2 NTU generally results in frequent cleanings)
• Maximum Feed SDI (15 minute test): 5.0
• Maximum Number Of Tape Wrap Elements Per Vessel: 3
• 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% per element.

Performance

• Individual element permeate flows may vary +20/-15% from nominal values.
• Minimum chloride ion rejection is 97.5% at the specified test conditions.
• System performance prediction is recommended using KMS ROPRO® software.
• System operating data normalization and tracking is recommended using KMS NORMPRO® software.

Chemical Tolerance

• Chlorine: Exposure to free chlorine or other oxidizing agents (such as permanganate, ozone, bromine, iodine) is not recommended. Free chlorine tolerance is 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/temperature differ. Sodium metabisulfite (without catalysts like cobalt) is the preferred reducing agent.
• Chloramines: TFC-ULP 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: Exposure to these chemicals during operation or cleaning is not recommended, as they may cause irreversible fouling.
• Lubricants: For element loading, use only approved silicone lubricant, water, or glycerin for O-rings and brine seals. Petroleum-based or vegetable-based oils may damage the element and void the warranty.

Mechanical / hydraulic

Model 4040-ULP & 4040-ULP-T

• 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)
• Interconnector Part Number: 0035267
• O-ring Part Number: 0035458
• Brine Seal Part Number: 0035702

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

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Disclaimer: This summary is based on the provided text extract 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