SB90 CA

Summary

The TRISEP® SB series of cellulose acetate membranes uses a cellulose acetate / triacetate blend that delivers solute rejection, fouling resistance, and chlorine tolerance. The SB90 is a nanofiltration (NF) cellulose acetate (CA) membrane designed to operate at a lower pressure than CA reverse osmosis (RO) membranes while still producing high-quality permeate.

Product Identification

• Membrane Type: Cellulose Acetate

Operating Limits

• Maximum Operating Pressure: 41 bar (600 psi)
• Maximum Operating Temperature: 32°C (90°F)
• Nominal Operating pH: 5.5
• Cleaning pH Range: 2.0 – 7.5¹
• Chlorine Tolerance: 0.5 ppm nominal, 1 ppm max
• Maximum Pressure Drop: 1 bar (15 psi) per element; 4 bar (60 psi) per housing
• Maximum SDI₁₅: 5.0
• Maximum Turbidity: 1 NTU ¹ Refer to pH limits in Membrane Cleaning Guide – Cellulose Acetate Elements (TSG-C-005).

Product Water

• Stabilized Salt Rejection: 85.0%
• Minimum Salt Rejection: 80.0 – 90.0%

Mechanical / Hydraulic

The elements feature a fiberglass outer wrap and diamond-shaped feed spacers. All models on this datasheet include anti-telescoping devices (ATDs) attached to the ends of the element and one brine seal. All 4040 and 8040 models include one interconnector.

Design Information Test conditions for permeate flow are 2,000 ppm NaCl, 15.5 bar (225 psi), 25°C (77°F), 15% recovery, pH 5.5, 30 minutes operation. Flow rates will be no more than 15% below the values shown.

• TRISEP® PLT 2540-SB90-31
  • Part Number: 151010252
  • Permeate Flow: 2.5 m³/day (650 GPD)
  • Membrane Area: 2.4 m² (26 ft²)
  • Feed Spacer Thickness: 31 mil
• TRISEP® PLT 4040-SB90-31
  • Part Number: 151041441
  • Permeate Flow: 7.4 m³/day (1,950 GPD)
  • Membrane Area: 7.4 m² (80 ft²)
  • Feed Spacer Thickness: 31 mil
• TRISEP® 8040-SB90-TSA
  • Part Number: 151000849
  • Permeate Flow: 32.6 m³/day (8,600 GPD)
  • Membrane Area: 32.5 m² (350 ft²)
  • Feed Spacer Thickness: 31 mil
• TRISEP® 8040-SB90-TSFA
  • Part Number: 151060842
  • Permeate Flow: 32.6 m³/day (8,600 GPD)
  • Membrane Area: 32.5 m² (350 ft²)
  • Feed Spacer Thickness: 31 mil

Physical Dimensions

• TRISEP® PLT 2540-SB90-31
  • Element Weight: 3 kg (7 lb)
  • Dim. A: 1,016 mm (40.0 inches)
  • Dim. B: 64 mm (2.5 inches)
  • Dim. C (Outer Diameter): 19.1 mm (0.75 inches)
  • Permeate Tube: Male (protruding, Dim. D: 25.4 mm / 1.0 in)
• TRISEP® PLT 4040-SB90-31
  • Element Weight: 4 kg (9 lb)
  • Dim. A: 1,016 mm (40.0 inches)
  • Dim. B: 99 mm (3.9 inches)
  • Dim. C (Outer Diameter): 19.1 mm (0.75 inches)
  • Permeate Tube: Male (protruding, Dim. D: 25.4 mm / 1.0 in)
• TRISEP® 8040-SB90-TSA
  • Element Weight: 16 kg (36 lb)
  • Dim. A: 1,016 mm (40.0 inches)
  • Dim. B: 201 mm (7.9 inches)
  • Dim. C (Inner Diameter): 38.1 mm (1.50 inches)
  • Permeate Tube: Female
• TRISEP® 8040-SB90-TSFA
  • Element Weight: 16 kg (36 lb)
  • Dim. A: 1,016 mm (40.0 inches)
  • Dim. B: 201 mm (7.9 inches)
  • Dim. C (Inner Diameter): 28.6 mm (1.125 inches)
  • Permeate Tube: Female

Note: Shipping weight is dependent on packaging material and quantity shipped.

Important Information

• Start-up: MANN+HUMMEL Water & Fluid Solutions recommends flushing elements for 30 minutes at low pressure and discarding permeate during the flush prior to operation. Refer to Element Start-Up Guide – System Start-Up (TSG-O-005) for detailed procedures.
• Cleaning: TRISEP® membrane elements must be cleaned periodically to ensure proper operation and to prevent membrane damage. Refer to Membrane Cleaning Guide – Cellulose Acetate Elements (TSG-C-005).
• Storage: TRISEP® membrane elements must be stored appropriately to ensure proper operation and to prevent membrane damage. Refer to Element Storage Guides (TSG-O-009 & TSG-O-010).

Customizable Specialty Elements: MANN+HUMMEL Water & Fluid Solutions offers a full range of membranes and element designs for challenging water and process applications. These include low-fouling RO, submerged UF, continuous high temperature, ultra-high pressure, and unique sanitary designs.

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Disclaimer: This summary is based on extracted text and may not include all figures, footnotes, or the latest revisions. For contractual purposes, refer to the official OEM PDF document revision used on the project.

Official datasheet (PDF)

PDF datasheet