描述
Nexis T filter cartridges are extremely robust melt blown depth filters that are ideal for use in rigorous clarification and particle reduction applications.
Nexis T filter cartridges feature continuous graded, fixed pores which provide pre- and fine filtration within the same cartridge.
Their unique feature is Pall's proprietary CoLDSM (Co-Located Large Diameter) fiber media technology, which ensures efficient use of the entire gradient depth of the filter, resulting in high fluid transport and high dirt holding capacity.
The CoLD Melt™ process produces a mixture of micro-thin fibers intermingled and thermally bonded with large diameter CoLD fibers to provide an integral support and fluid transport network. The large internal void volume created by the CoLD process enables the capture of more contaminant than conventional cartridges, while the rigid support fibers hold the filtration fibers firmly in place.
The result is less potential for contaminant unloading and more efficient filtration under a variety of operating conditions.
| Features | Benefits |
| High structural integrity with fixed fiber matrix |
|
| Micro-thin fibers with continuous graded fixed pore structure provide pre- and fine filtration in the same cartridge |
|
| Proprietary high strength center core for 3-10 micron grades, economical high strength extruded core for more open grades |
|
| All polypropylene construction without adhesives, binders, resins or silicone |
|
Specifications
Material of Construction
| Component | Description |
| Filter Medium | Polypropylene |
| Hardware | Polypropylene |
| SOE Style Cartridges only | |
| Adaptor | Polypropylene |
| O-Ring Seal | Silicone Elastomer Ethylene Propylene Rubber |
Quality
- Cartridges produced in a controlled environment/li>
- Manufactured within a Quality Management System certified to ISO 9001:2008
Food Contact Compliance
Please refer to the Pall website for a Declaration of Compliance to specific National Legislation and/or Regional Regulatory requirements for food contact use.
Operating Characteristics in Compatible Fluids1
| Micron Rating | Maximum Differential Pressure2 | Operating Temperature |
| 3-10 micron | 1.03 bard (15 psid) | 82 °C (180 °F) |
| 1.72 bard (25 psid) | 66 °C (150 °F) | |
| 4.14 bard (60 psid) | 30 °C (86 °F) | |
| 20-200 micron | 1.72 bard (25 psid) | 60 °C (140 °F) |
| 3.45 bard (50 psid) | Ambient | |
1Fluids which do not swell, soften or adversely affect any of the filter components
2Recommended change-out differential pressure is 2.4 bard (35 psid), provided the maximum
Sterilization and Sanitization
- Single open end (SOE) cartridges may be autoclaved for 30 minutes at 121 °C (250 °F) under no end load conditions. Cartridges should be cooled to system operating temperatures prior to use.
- In situ steam sterilization is not recommended.
Performance
Flow Rates3
3Typical initial clean delta p per 254 mm (10 inch) cartridge, water at 20 °C (68 °F). For liquids with viscosity greater than 1 cP, multiply the delta p by the viscosity.
Figure 1: Cutaway view of a Nexis filter, illustrating unique, proprietary CoLD Melt fiber technology for highly efficient contaminant removal, longer service life, and improved strength
Segments
Type
Ordering Information
This information is a guide to the part numbering structure and possible options. For availability of specific options please contact Pall. Refer to Pall for housing details.
Part Number: NXT [Table 1] [Table 2] U [Table 3] W [Table 4] 480
Example Part Number: NXT320UM7WS480
See bold reference codes in tables.
Table 1: Removal Rating4
| Code | Description |
| 3 | 3 μm |
| 5 | 5 μm |
| 10 | 10 μm |
| 20 | 20 μm |
| 30 | 30 μm |
| 40 | 40 μm |
| 50 | 50 μm |
| 75 | 75 μm |
| 100 | 100 μm |
| 150 | 150 μm |
| 200 | 200 μm |
4 Nexis T filters provide a removal efficiency of 90% at the stated rating in compatible fluids. Particulate removal rating is determined by a single pass test based on ASTM F-795.
Table 2: Length
| Code | Description |
| DOE Style only: | |
| 4 | 102 mm (4") |
| 5 | 127 mm (5") |
| 975 | 248 mm (9.75") |
| 9875 | 251 mm (9.875") |
| 10 | 254 mm (10") |
| 195 | 495 mm (19.5") |
| 20 | 508 mm (20") |
| 2925 | 743 mm (29.25") |
| 295 | 749 mm (29.5") |
| 30 | 762 mm (30") |
| 39 | 991 mm (39") |
| 395 | 1003 mm (39.5") |
| 40 | 1016 mm (40") |
| SOE Style only: | |
| 10 | 254 mm (10") |
| 20 | 508 mm (20") |
| 30 | 762 mm (30") |
| 40 | 1016 mm (40") |
Table 3: Adaptor
| Code | Description |
| blank | DOE with no endcaps |
| M3 | SOE - single open end with flat closed end and external 222 O-rings |
| M7 | SOE - single open end with fin end, 2 locking tabs and external 226 O-rings |
| M8 | SOE - single open end with fin end and external 222 O-rings |
Table 4: O-ring Seal Material5
| Code | Description |
| S | Silicone Elastomer |
| E | Ethylene Propylene Rubber |
5 For M3, M7 and M8 styles only
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