Varafine™ VFSE Series Filters

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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

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

Ordering Information / Part Numbers

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

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