PFA/PTFE Lined Cartridge/Bag Filter

PFA / PTFE Lined Filter

TFI PFA / PTFE Lined Filters are specially designed for highly corrosive, aggressive, and chemically demanding process applications where conventional metallic filter surfaces may not provide adequate chemical resistance. The filter housing or wetted components are lined with PFA or PTFE, providing a chemically resistant barrier between the process fluid and the underlying construction material.

These filters are suitable for applications involving strong acids, alkalis, aggressive chemicals, solvents, and other corrosive process fluids. The lining provides excellent chemical resistance while maintaining the mechanical strength of the underlying filter housing.

Key Features

• Excellent chemical and corrosion resistance

• PFA / PTFE lining for protection of wetted surfaces

• Suitable for highly aggressive chemicals

• Low surface adhesion and non-stick characteristics

• Good resistance to a wide range of acids, alkalis, and solvents

• Suitable for demanding industrial processes

• Available with different filter cartridge configurations

• Easy maintenance and cartridge replacement

• Customized sizes and filtration ratings available

• Suitable for high-purity and corrosive-fluid applications

Applications

• Chemical processing

• Pharmaceutical manufacturing

• Specialty chemical production

• Acid and alkali filtration

• Solvent filtration

• Semiconductor and electronic chemical processing

• Electroplating and surface treatment

• Corrosive liquid filtration

• High-purity chemical filtration

• Process chemical handling

Frequently Asked Questions

1. What is a PFA / PTFE lined filter?
It is a filter in which the wetted surfaces of the housing or components are lined with PFA or PTFE to provide high chemical resistance against aggressive process fluids.

2. What is the difference between PFA and PTFE lining?
Both materials offer excellent chemical resistance. PFA generally provides better melt-processability and can be advantageous where more complex lining geometries or improved mechanical properties at elevated temperatures are required, while PTFE is widely used for its excellent chemical resistance and non-stick properties.

3. What chemicals can be handled?
PFA/PTFE-lined filters are suitable for many aggressive chemicals, including various acids, alkalis, solvents, and corrosive process fluids. Final compatibility should always be verified against the specific chemical concentration and operating temperature.

4. Can PFA/PTFE-lined filters be used at high temperatures?
Yes, but the allowable operating temperature depends on the lining material, pressure, construction, and application. The operating conditions should be specified during filter selection.

5. Can different filter cartridges be used with a PFA/PTFE-lined housing?
Yes. The cartridge selection depends on the required micron rating, flow rate, temperature, chemical compatibility, and filtration application.

6. Are PFA/PTFE-lined filters reusable?
The housing itself is reusable. The cartridge may be disposable, cleanable, or reusable depending on the selected filtration media and cartridge construction.

7. What information is required for selecting a PFA/PTFE-lined filter?
Please provide:

• Fluid/chemical name and concentration

• Flow rate

• Operating pressure

• Operating temperature

• Required micron rating

• Cartridge type

• Required filtration capacity

• Inlet and outlet size

• Housing material

• Quantity

8. Why choose a PFA/PTFE-lined filter instead of a standard stainless-steel filter?
For highly corrosive applications, PFA/PTFE lining can provide an additional chemically resistant barrier and help protect the filter's wetted surfaces from aggressive process media.