LewaBrane RO B370 HR

Summary

Product identification

The Lewabrane® RO B370 HR elements are spiral wound, composite polyamide membrane elements designed for industrial water treatment applications. These are suitable for treating brackish and low salinity waters for primary demineralization in boiler water and process water applications.

Operating limits

• Operating pressure, max.: 41 bar (600 psi)
• Operating temperature, max.: 45 °C (113 °F)
• Feed water SDI, max.: 5
• Feed flow, max.: 18.0 m³/h (80 gpm)
• Concentrate flow, min.: 2.7 m³/h (12 gpm)
• pH range during operating: 2 - 11
• pH range during cleaning: 1 - 12
• Pressure drop per element, max.: 1.0 bar (15 psi)
• Pressure drop per vessel, max.: 3.5 bar (50 psi)
• Chlorine concentration, max.: 0.1 ppm

Feed water

Element is tested under the following conditions:

• NaCl concentration: 2000 mg/l
• Operating temperature: 25 °C (77 °F)
• pH: 7
• Recovery rate: 15 %
• Applied pressure: 15.5 bar (225 psi)

Product water

• Salt rejection, av.: 99.7 %
• Salt rejection, min.: 99.3 %
• Permeate flow rate, av.: 35.3 m³/d (9300 gpd)
• Permeate flow rate, min.: 28.2 m³/d (7400 gpd)

Mechanical / hydraulic

• Feed spacer thickness: 0.8 mm (31 mil)
• Membrane area: 34.4 m² (370 ft²)
• Element Dimensions:
  • A (Length): 1016 mm (40 inch)
  • B (Diameter): 201 mm (7.9 inch)
  • C (ID): 29 mm (1.125 inch)

Additional Information

• Handle RO Elements with care; do not drop.
• Each RO Element is wet tested, preserved in a 1% weight sodium bisulfite solution, and vacuum packed in oxygen barrier bags.
• During storage, avoid freezing and direct sunlight. The temperature should be below 35 °C (95 °F).
• After installation, keep the RO Elements wet. Use a compatible preservative for storage durations longer than 7 days.
• During initial start-up, discharge the first permeate to drain for 30 minutes.
• Permeate back pressure should not exceed feed pressure at any time.
• Consider cleaning if the pressure drop increases by 20% or water permeability decreases by 10%.
• Use only chemicals which are compatible with the membrane.
• For additional information, consult the Lewabrane® technical information available from the manufacturer.

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

Official datasheet (PDF)

PDF datasheet