Varafine™ VFSE Series Filters product photo Primary L

Varafine™ VFSE Series Filters

Varafine filters are well suited for ultra high purity DI water applications where very fine removal ratings and extremely high flow rates are required for economical installations. These filters contain a highly asymmetric polysulfone membrane that results in exceptionally low pressure drop values.
  • Available in removal ratings from 0.02 μm to 0.45 μm
  • Double layer, patented highly asymmetric polysulfone membrane
  • Rapid rinse-up
  • Integrity testable
  • Manufactured in cleanroom environment


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Description
Varafine filters are well suited for ultra high purity DI water applications where very fine removal ratings and extremely high flow rates are required for economical installations. These filters contain a highly asymmetric polysulfone membrane that results in exceptionally low pressure drop values.
  • Available in removal ratings from 0.02 μm to 0.45 μm
  • Double layer, patented highly asymmetric polysulfone membrane
  • Rapid rinse-up
  • Integrity testable
  • Manufactured in cleanroom environment
Specifications

Materials

  • Medium: hydrophilic asymmetric polysulfone
  • Core, cage and endcaps: polypropylene
  • Support and drainage: polypropylene
  • Sealing method: thermal bond
  • O-ring/gasket: silicone elastomer (standard)

Removal Ratings

  • 0.02 μm, 0.1 μm, 0.2 μm, 0.45 μm

Configurations

  • Nominal length:
    • 102 mm/4 in.
    • 254 mm/10 in.
    • 508 mm/20 in.
    • 762 mm/30 in.
    • 1016 mm/40 in.
  • Diameter: 66 mm/2.6 in.
  • O-ring size/end caps:
    • Code M3 (222 double O-rings/flat end)
    • Code M8 (222 double O-rings/finned end)
    • Code M7 (226 double O-ring/bayonet lock/finned end)

Operating Conditions

  • Maximum operating temperature: 30 °C / 86 °F (70 °C / 158 °F)1
  • Maximum forward differential pressure:
    • 0.5 MPa @ 20 °C / 80 psid @ 68 °F
    • 0.14 MPa @ 70 °C / 20 psid @ 158 °F

Integrity Test Values2

Per 254 mm / 10 in segment
  • 0.02 μm <30 cm3/min @ 50 psig / 0.34 MPa
  • 0.1 μm <24 cm3/min @ 25 psig / 0.17 MPa
  • 0.2 μm <20 cm3/min @ 20 psig / 0.14 MPa bar
  • 0.45 μm <15 cm3/min @ 15 psig / 0.1 MPa
1 Only in deoxygenated water systems; otherwise use Varafine T filters.
2 Test fluid used is 100% H2O.
Performance

Pressure Drop vs. Liquid Flow Rate

Varafine VFSE Filter Cartridges

Varafine VFSE Filter Cartridges
Type
Cartridges and Elements
Use
Filtration, Purification
Ordering Information
This information is a guide to the part number structure and possible options. For availability of specific options and housing details, please contact Pall.

Example Part Number: VFSE 100 30 M7 T ( See bold references in tables below)

Part Number:
VTSE < Removal Rating Code from Table 1 > < Nominal Length Code from Table 2> < Cartridge End Configuration Code from Table 3 > < O-ring Material Code from Table 4 >

Table 1 - Removal Rating (µm)

 
Code Removal Rating (μm)
020 0.02
100 0.1
200 0.2
450 0.45
 

Table 2 - Nominal Length (in / mm)

 
Code Nominal Length (in / mm)
4 102/4
10 254/10
20 508/20
30 762/30
40 1016/40
 

Table 3 - Cartridge End Configuration

 
Code Cartridge End Configuration
M3 SOE flat closed end, 222 O-rings
M7 SOE fin end, 226 O-rings
M8 SOE fin end, 222 O-rings
DOE Double open end
 

Table 4 - O-ring Material

 
Code O-ring Material
S Silicone
E EPDM
V Viton3 A
T Teflon3 encapsulated silicone
F Teflon encapsulated Viton A
 
3 Viton and Teflon are trademarks of E. I. du Pont de Nemours and Company.


Unit conversion: 1 bar = 100 kilopascals
Application
Ultrapure water