TW30-1812-75

Summary

Product identification

DOW FILMTEC™ TW30-1812-75 Membranes are residential reverse osmosis (RO) elements. These "Next Generation" elements are a fully compatible replacement for existing DOW FILMTEC™ residential RO elements. They are shipped dry for convenient handling and long shelf-life.

Product Specifications

Performance data for DOW FILMTEC™ TW30-1812 series elements:

• Applied Pressure: 50 psig (3.4 bar)
• Stabilized Salt Rejection: 98%
• Permeate Flow Rate (TW30-1812-75): 75 gpd (12 l/h)
  • Other models listed in the datasheet:
    • TW30-1812-24: 24 gpd (3.8 l/h)
    • TW30-1812-36: 36 gpd (5.7 l/h)
    • TW30-1812-50: 50 gpd (7.9 l/h)
• Part Number (TW30-1812-75): 339146

Test Conditions:

• 250 ppm softened tap water
• 77°F (25°C)
• 15% recovery
• Specified applied pressure

Notes:

• Minimum salt rejection is 96.0%.
• Permeate flows for individual elements may vary +/-20%.

Operating limits

• Membrane Type: Polyamide Thin-Film Composite
• Maximum Operating Temperature: 113° F (45°C)
• Maximum Operating Pressure: 150 psig (10 bar)
• Maximum Feed Flow Rate: 2.0 gpm (7.6 lpm)
• pH Range, Continuous Operation: 2 – 11
  • Maximum temperature for continuous operation above pH 10 is 95°F (35°C).
• Maximum Feed Silt Density Index (SDI): 5
• Free Chlorine Tolerance: < 0.1 ppm
  • Under certain conditions, the presence of free chlorine and other oxidizing agents will cause premature membrane failure. Oxidation damage is not covered under warranty. It is recommended to remove residual free chlorine by pretreatment prior to membrane exposure.

Mechanical / hydraulic

Dimensions – Inches (mm)

• A: 11.74 (298)
• B: 1.17 (30)
• C: 0.68 (17)
• D: 1.75 (44.5)
• E: 9.4 (239)

TW30-1812 Home Drinking Water elements fit nominal 2-inch I.D. pressure vessels.

Important Information

• It is recommended that systems using these elements rinse them for 24 hours prior to first use to meet NSF/ANSI 58 Standard.
• The first full tank of permeate must be discarded. Do not use this initial permeate for drinking water or food preparation.
• Keep elements moist at all times after initial wetting.
• To prevent biological growth during prolonged system shutdowns, it is recommended that membrane elements be immersed in a preservative solution. Rinse out the preservative before use.
• The membrane shows some resistance to short-term attack by chlorine (hypochlorite). Continuous exposure, however, may damage the membrane and should be avoided.
• The Limited Warranty will be null and void if operating limits and guidelines are not strictly followed. The OEM is fully responsible for the effects of incompatible chemicals and lubricants on elements.

Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions from the original PDF datasheet. For contractual purposes, data must match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet