High Surface Area Pleated Cartridges with Polyester Hardware
The Duo-Fine® P filter cartridge is an upstream discharged water filter. This series has many robust features that make it a reliable unit for factories. Some of those features are:
- A high surface area pleated cartridges that combine excellent retention characteristics with high contaminant-holding capacity
- Polyester hardware that provides excellent compatibility
- Availability in retention ratings of 0.2 to 50 μm
- Thermally bonded, has eliminated epoxy potting, adhesives, and glues
- Manufactured under ISO 9001 quality system
Materials of Construction
|50 μm:||Spunbonded polyester|
|All other grades:||Borosilicate microfiberglass with acrylic binder|
|Gaskets/O-rings:||Fluorocarbon elastomer, nitrile, hydrocarbon rubber, silicone elastomer, FEP encapsulated silicone|
|Outside Diameter:||6.4 cm (2.5 in.)|
|Lengths (tip-to-tip):||25.4 cm (10 in.), 50.8 cm (20 in.), 76.2 cm (30 in.), 78.5 cm (30.9 in.), 101.6 cm (40 in.)|
Particle Retention (μm)
|Cartridge Designation||Liquid Service (by ASTM F-795 Test)||Gas Service|
|90% Efficiency||>99.9% Efficiency||Removal Efficiency by DOP Test|
Duo-Fine P Series filter cartridges have been extensively laboratory and field tested to determine removal efficiencies in the most stringent of operating conditions.
The removal rating of any filtration device will depend on, to some extent, the conditions under which it is used or tested. The test results will be influenced by the nature of the fluid, its viscosity, the flow rate, the type of contaminant, and the temperature.
The ratings given above represent the diameter of the largest hard spherical particle that will pass through the filter during standard test. Consult Pall for a complete description of Pall's test procedures.
Typical Flow vs. Differential Pressure for Application Sizing
Flow rate is for a 25.4 cm (10 in) cartridge. For liquids other than water, multiply differential pressure by fluid viscosity (cP).
- 0.2, 0.45, 1, 3, 10, 30, 50 μm
Recommended change-out differential pressure1
- 2.4 bard (35 psid)
Maximum differential pressure
- 5.2 bard (75 psid) @ 20 °C (68 °F)
- 2.8 bard (40 psid) @ 93 °C (200 °F)
Maximum operating temperature2
- 93 °C (200 °F)
1 Provided that the maximum differential pressure is not exceeded based on temperature limits defined above.
2 With compatible fluids.
Pall Part Number = DFPT  -  E  - 
|Code||Filter grades (μm)|
|Code||Cartridge lengths (cm/ in.) nominal|
|T||FEP encapsulated silicone (O-rings)|
|DOE||DOE with elastomer gasket seals & end caps|
|M3||SOE flat closed end, external 222 O-rings (retrofits other manufacturers’ Code 0)3|
|M8||SOE fin end, external 222 O-rings (retrofits other manufacturers’ Code 5)3|
3 For details, contact Pall Corporation.
Midstream Process Water, Upstream Injection Water & SRU, Upstream Offshore Boiler Water, Upstream Offshore Produced Water, Upstream Onshore Produced Water, Upstream Onshore Surface Discharged Water
Midstream, Upstream, Upstream, Upstream, Upstream, Upstream