ESPA-75

Summary

Product Identification

• Product Name: ESPA-75
• Configuration: Spiral Wound
• Membrane Polymer: Composite Polyamide
• Feed/Brine Spacer Thickness: 16 mil (0.41 mm)
• Special Feature: HYDRAblock™ Antibacterial Technology

Performance

• Permeate Flow: 75 gpd (0.28 m³/d)
• Salt Rejection (Nominal): 98.0 %

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 Feedwater Turbidity: 1.0 NTU
• Maximum Feedwater SDI (15 mins): 4.0
• Maximum Feed Flow: 3 GPM (11 l/m)
• Minimum Ratio of Concentrate to Permeate Flow for any element: 5:1
• Maximum Pressure Drop for Each Element: 10 psi

Note: The limitations listed are for general use. For specific projects, operating at more conservative values may ensure the best performance and longest membrane life. Refer to Hydranautics Technical Bulletins for detailed information on operation limits, cleaning pH, and cleaning temperatures.

Test Conditions

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

• 500 PPM Softened Tap Water
• 65 psi (0.45 MPa) Applied Pressure
• 77 °F (25 °C) Operating Temperature
• 15% Permeate Recovery
• 6.5 – 7.0 pH Range (Data taken after 30 minutes of operation)

Mechanical / Hydraulic

• Dimensions:
  • A: 11.74 inches (298 mm)
  • B: 1.78 inches (45.2 mm)
  • C: 10.0 inches (254 mm)
  • D: 0.68 inches (17.3 mm)
  • Core tube extension E: 0.86 inches (21.8 mm)
• Dry Weight: 0.5 lbs. (0.23 kg)

Note:

• Dimension B fits 2” sch 40 PVC pipe.
• The core tube on the brine seal side (dimension D) is plugged. Permeate flow is through the o-ring side of the tube only.
• Minimum permeate flow for individual elements is 20 percent below the listed flow.
• 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.

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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 OEM PDF datasheet. Contractual data must match the specific OEM PDF revision used on the project.

Official datasheet (PDF)

PDF datasheet