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PSH-Series Hydrophobic Polysulfone

PSH-Series high purity hydrophobic polysulfone membrane filter cartridges provide a cost-effective alternative to PTFE or PVDF membrane cartridges for air, bulk gas, and tank vent applications requiring high moisture resistance.

PSH-Series Ordering Specifications

pleated membrane cartidridges
Micron Ratings0.02 or 0.03
Lengths10″, 20″, 30″, 40″
End Cap Styles2 = DOE Flat Gasket
3 = 222 w/ Fin
4 = 222 w/ Flat Cap
6 = 226 w/ Flat Cap
7 = 226 w/ FIN
16 = 213 Internal O-Ring
28 = 222 3-Tabs w/ Fin
O-Rings/GasketsB = Buna
S = Silicone
T = Teflon® Encapsulated Viton®
V = Viton®
Z = Teflon® Encapsulated Silicone
AddersCS = 316SS Compression Spring
I = Stainless Steel Insert

Construction Materials

  • Membrane: Hydrophobic Polysulfone
  • Support Media: Polypropylene
  • End Caps: Polypropylene
  • Center Core: Polypropylene
  • Outer Support Cage: Polypropylene
  • O-Rings/Gaskets: Buna, EPDM, Silicone, Teflon® Encapsulated Viton®, Viton®, Teflon® Encapsulated Silicone

Typical Applications

  • Tank Vent
  • Fermentation
  • Air, Nitrogen, and Other Inert Gases

Operating Conditions

  • Change Out Δ (recommended): 35 PSID
  • Temperature (max): 176˚F (80˚C)
  • Differential Pressure (max): 50 PSID (3.4 bar) at 68˚F (20˚C)


  • Filter Hot Water: 80˚C for 30 min
  • Steam Sterilization: 121˚C for 30 min., multiple cycles
  • Chemicals: Cartridges are compatible with most chemical sanitizing agents.
  • Note: Stainless steel insert option required for all cartridges being hot water sanitized or steam sterilized


All polypropylene components meet the specifications for biological safety per USP Class VI – 121˚C for plastics.

Flow Rate vs Pressure Drop


  • Length: 10 to 40 inches (25.4 to 101.6 cm) nominal
  • Outside Diameter: 2.70 inches (7.0 cm) nominal

Food Safety Compliance

Materials of construction comply with FDA regulations for food and beverage contact use as detailed in the US Code of Federal Regulations, 21 CFR. Materials used to produce filter media and hardware are deemed safe for use in contact with foodstuffs in accordance with EU Directives 2002/72/EC, 1935/2004, and/or 10/2011.

PSH-Series Overview

The highly asymmetric membrane pore structure provides a high flow rate at a low-pressure drop. Constructed using high-purity polypropylene hardware and support layers. PSH-Series cartridges offer outstanding performance value. Manufactured in a clean-room environment to maintain high standards of purity and cleanliness