Ultrafiltration Membranes From a Name You Can Trust

Product Information

Durpro offers P-Series ultrafiltration elements for use in pretreatment of process water, post-treatment of ultrapure water, PVA recovery, and protein concentration. The PW4025T elements feature a tape outerwrap and standard feed spacers. The PW4026F, PW4040F, and PW8040F elements feature a fiberglass outerwrap and standard feed spacers. Other materials of construction and special feed spacers are available.

The P-Series polyethersulfone ultrafiltration membrane is characterized by a 10,000 molecular weight cutoff and greater than 96% rejection of Cytochrome-C (13,300 MW protein).

Membrane Specifications

  • Membrane: Polyethersulfone
    • (PES)
  • Applications: Post-treatment of ultrapure water, PVA recovery, protein recovery.
  • Rejection characteristics: 10,000 molecular weight cutoff. >96% rejection of Cytochrome-C (13,300 MW protein).
  • Recommended pH: 2.0-11.0 operating range. 2-11.5 cleaning range.
  • Chlorine tolerance: 5,000+ ppm days.
  • Maximum temperature: 122F (50C)
  • Series Designation: PW

Element Specification

Model GPD (m/d) Active Area ft (m)
PW4025T 5,400 (20.41) 60 (5.57)
PW4026F 5,400 (20.41) 60 (5.57)
PW4040F 8,100 (30.62) 90 (8.36)
PW8040F 31,500 (119.07) 350 (32.52)

Specifications are based on fouling-free water at 30 psig (207 kPa), 77F (25C). Individual element flux may vary 25%.

Operating and Design Parameters

  • Typical operating pressure: 80-135 psig (552-931 kPa).
  • Maximum operating pressure: 200 psig (1,379 kPa).
  • Maximum temperature: 122F (50C).
  • Recommended pH: Operating range 2.0-11.0, cleaning range 2.0-11.5.
  • Chlorine tolerance: 5,000+ ppm-days.