ESPA-2521

Summary

Product identification

• Membrane Element: ESPA-2521
• Configuration: Spiral Wound
• Membrance Polymer: Composite Polyamide
• Membrane Active Area: 9.9 ft²

Performance

• Permeate Flow: 350 gpd (1.3 m³/d)
• Salt Rejection: 99.4 % (98.0 % minimum)

Operating limits

• Maximum Applied Pressure: 300 psig (2.1 MPa)
• Maximum Chlorine Concentration: < 0.1 PPM
• Maximum Operating Temperature: 113° F (45°C)
• pH Range; Continuous (Cleaning): 2-10 (1-12)
• Maximum Feed Flow: 6 GPM (23 l/m)
• Minimum Ratio of Concentrate to Permeate Flow for any element: 5:1
• Maximum Pressure Drop for Each Element: 10 psi

Feed water

• Maximum Feedwater Turbidity: 1.0 NTU
• Maximum Feedwater SDI (15 mins): 4.0

Mechanical / hydraulic

• Dimensions A: 21.0 inches (533.4 mm)
• Dimensions B: 2.4 inches (61 mm)
• Dimensions C: 0.75 inches (19.1 mm)
• Weight: 2 lbs (0.9 kg)
• Core tube extension: 1.10 inches (27.9 mm)
• All membrane elements are supplied with a brine seal and o-rings.
• Most elements are packaged dry, sealed in polyethylene bags, and shipped in a cardboard box. Some elements are sealed in polyethylene bags containing less than 1.0% sodium meta-bisulfite solution and shipped in a cardboard box.

Test Conditions

Elements are wet tested for quality assurance using the following conditions:

• 1500 PPM NaCl solution
• 150 psi (1.03 MPa) Applied Pressure
• 77 °F (25 °C) Operating Temperature
• 10% Permeate Recovery
• 6.5 – 7.0 pH Range
• Data taken after 30 minutes of operation.
• Minimum permeate flow for individual elements is 15 percent below listed flow.

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

Official datasheet (PDF)

PDF datasheet