PDF Filter Elements

Summary

Product Identification

The PDF Series Filter Cartridges are designed for safer filtration of hazardous fluids. They are disposable filter cartridge/plastic housing elements available with a wide variety of depth or pleated media filter cartridges.

Unique Design Features

• Disposable filter cartridge/plastic housing element
• Virtually eliminates operator contact with fluid during changeover
• A wide variety of depth or pleated media filter cartridges available
• Available in retention ratings from 0.2 to 100 microns (µm)
• Economical alternative to expensive competitive capsules
• ¹/₄", ¹/₂", ³/₄" or 1" NPT inlet and outlet connections available for use in most piping plans
• ¹/₄" vent allows the housing assembly to be easily vented or drained

Operating Limits

• Maximum Operating Pressure (Liquid only): 75 psig (5.2 bar) @ 125˚F (52˚C)
• Maximum Operating Pressure (Gas only): 40 psig (2.8 bar) @ 100˚F (38˚C)
  • CAUTION: Gas applications are inherently more hazardous than liquid service, and strict adherence to the maximum recommended pressure/temperature is required.

Product Specifications

Materials of Construction:

• Shell: Polypropylene
• Head: Polypropylene
• Shell to Head Sealing Material: Polypropylene, electromagnetically heat sealed (polypropylene wafer, mixed with a small amount of 400 series stainless steel, electromagnetically heated for excellent bond)
• Cartridge to Head Sealing Material: Polypropylene

Mechanical / Hydraulic

Connection Sizes:

• Inlet/Outlet: ¹/₄" (0.64 cm), ¹/₂" (1.27 cm), ³/₄" (1.9 cm), 1" (2.5 cm)
• Vent: ¹/₄" (0.64 cm) NPT, upstream
• Drain: ¹/₄" (0.64 cm) NPT, downstream

Cartridge Selection Guide (Filter Media):

• DFT Classic® Filter Media: Various
• Duo-Fine® Filter Media: Pleated Microfiberglass
• Nexis® Filter Media: Melt Blown Depth Polypropylene
• Poly-Fine® II Filter Media: Pleated Polypropylene
• Poly-Fine ARD Filter Media: Spiral Wrapped Polypropylene Sheets
• Poly-Fine XLD Filter Media: Pleated Depth Polypropylene
• Varafine™/Water-Fine Filter Media: Highly Asymmetric Polysulfone Membrane

Dimensional Information: The PDF Series is available in various models corresponding to cartridge length and port size.

• Models: PDF 4, PDF 10, PDF 20, PDF 30
• Cartridge Lengths: 4 inches, 10 inches, 20 inches, 30 inches
• Port Sizes: ¹/₄", ¹/₂", ³/₄" See the official PDF for exact tabulated dimensions (A and B) for each model and port size combination.

Flow Rate Information: The document includes graphs illustrating housing differential pressure versus liquid flow rate (water at 68°F / 20°C) and housing differential pressure versus gas flow rate (air at 68°F / 20°C) for various port sizes (¹/₄", ¹/₂", ³/₄"). See the official PDF for specific flow curves.

Part Numbers/Ordering Information

Example: PDF N – PFT I – 10U (e.g. PDF.75PFT0.45–10U)

Inlet/Outlet Port Sizes (Code 'N'):

• .25: ¹/₄" NPT
• .50: ¹/₂" NPT
• .75: ³/₄" NPT
• 1: 1" NPT

Notes:

• The ¹/₄" configuration has three ports on each end: Inlet (Main port, two closed ports), Outlet (Vent, main port, extra drain).

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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)

Lenntech datasheet mirror