LOW2-4021-XL

Summary

Product Identification

Model: LOW2-4021-XL Type: Extra Area - Low Energy, Excellent Rejection - Brackish Water Element Configuration: Spiral Wound Membrane Polymer: Composite Polyamide Brine Spacer Material: Polypropylene

Membrane Specifications

• Nominal Membrane Area: 45 ft² (4.2 m²)
• Permeate Flow: 1000 gpd (3.78 m³/d)
• Salt Rejection: 99.4% nominal (99.2% minimum)

Test Conditions

(After 30 min of operation)

• Solution: 1500 ppm NaCl
• Applied Pressure: 150 psi (10.3 bar)
• Operating Temperature: 77 °F (25 °C)
• Permeate Recovery: 10%
• pH Range: 6.5 ÷ 7.0

Operating Limits

• Maximum Operating Pressure: 300 psi (20.7 bar)
• Maximum Operating Temperature: 113 °F (45 °C)
• Maximum Pressure Drop: 10 psi (0.7 bar)
• Maximum Feedwater Flow: 12 gpm (45.4 lpm)
• Maximum Feedwater Chlorine Concentration: <0.1 ppm
• Feedwater SDI (15 min): 5.0
• Feedwater Turbidity: 1.0 NTU
• Minimum ratio of concentrate to permeate flow for any element: 5:1
• Feedwater pH range: 3.0 ÷ 10.0

Physical Dimensions

• Total Length (A): 21.0 inches (533.4 mm)
• Diameter (B): 3.95 inches (100.3 mm)
• Connection Diameter (C): 0.75 inches (19.1 mm)
• Core Tube Extension Feed Side (DF): 1.2 inches (30.5 mm)
• Core Tube Extension Concentrate Side (DC): 1.2 inches (30.5 mm)
• Weight: 4 lbs (1.8 Kg)

Important Notices and Guidelines

• Minimum permeate flow for individual elements 20 percent below listed flow.
• Elements are vacuum sealed in a polyethylene bag containing less than 1.0% sodium meta-bisulfite.
• Permeate obtained from the first hour of operation should be discarded.
• Avoid static permeate-side backpressure at all times.
• These membranes may be subject to drinking water application restrictions in some countries; please check the application status before use and sale.
• For element loading, use only glycerine to lubricate o-rings and brine seal.
• The customer is fully responsible for the effects of incompatible chemicals on elements. The presence of free chlorine and other oxidizing agents will cause membrane failure; the damage is not covered under warranty.

---

Disclaimer: This summary is based solely on the provided text extract. The original PDF datasheet may contain additional figures, footnotes, or revisions not present here. For contractual data and the most up-to-date specifications, always refer to the official OEM PDF revision used on your project.

Official datasheet (PDF)

PDF datasheet