NF400

Summary

Product Identification

The FilmTec™ NF270-400/34i Element is a spiral-wound element featuring a polyamide thin-film composite membrane. It is designed for utility managers and operators handling surface and groundwater, offering:

• High removal of total organic carbon (TOC) and trihalomethane (THM) precursors.
• Medium to high salt passage and medium hardness passage.
• Organic removal with partial softening to maintain a minimum hardness level for organoleptic properties and distribution network preservation.
• High productivity, cleanability, and low energy consumption, attributed to its high active area and wide cleaning pH range (1-12).
• iLEC™ interlocking end caps, which reduce system operating costs and the risk of o-ring leaks.

Mechanical / Hydraulic

• Active Area: 400 ft² (37 m²)
• Feed Spacer: 34-LDP
• Element Dimensions (nominal):
  • Net length when connected (A): 40.0 in (1,016 mm)
  • Individual length with iLEC™ endcaps (B): 40.5 in (1,029 mm)
  • Outer Diameter (C): 7.9 in (201 mm)
  • Permeate tube ID (D): 1.125 ID (29 ID)
• Element designed to fit nominal 8-inch (203-mm) I.D. pressure vessels.

Operating Limits

• Maximum Operating Temperature: 113°F (45°C)
  • Maximum temperature for continuous operation above pH 10 is 95°F (35°C).
• Maximum Operating Pressure: 600 psig (41 bar)
• Maximum Element Pressure Drop: 15 psig (1.0 bar)
• pH Range (Continuous Operation): 3 - 10
• pH Range (Short-Term Cleaning (30 min.)): 1 - 12
• Maximum Feed Silt Density Index (SDI): SDI 5
• Free Chlorine Tolerance: < 0.1 ppm (Pretreatment recommended to remove residual free chlorine and other oxidizing agents to prevent premature membrane failure, which is not covered under warranty.)

Product Water

• Permeate Flow Rate: 12,500 GPD (47 m³/d)
  • Individual element flow rates may vary, but will be no more than ± 15%.
• Typical Stabilized Salt Rejection: >97.0%
• Minimum Salt Rejection: 97.0%
  • Stabilized salt rejection is generally achieved within 24-48 hours of continuous use.
• Test Conditions (for permeate flow and salt passage): 2,000 mg/l MgSO₄, 70 psi (4.8 bar), 77°F (25°C), and 15% recovery.

Important Information

• The use of this product alone does not guarantee the removal of cysts and pathogens from water. Effective reduction depends on complete system design, operation, and maintenance.
• This product may be subject to drinking water application restrictions in some countries. Check application status before use and sale.

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Disclaimer: This summary is based on the provided text extract. It may not include all figures, footnotes, or the latest revisions found in the complete OEM PDF datasheet. Contractual data for any project must always match the specific OEM PDF revision used on that project.

Official datasheet (PDF)

PDF datasheet