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media selection

When selecting a filter material for a filtration application, the thermal and chemical properties of each fibre need to be taken into consideration. Maximum recommended continuous filter operating and surge temperatures for individual fibres are given in the table below.

Note:

1. Stated maximum temperatures are for dry heat only.

2. Chart applies for needled felts. Filter materials for cartridges and pleated elements may contain stiffeners or bonding agents which can affect the thermal and chemical properties of the fabric.

photo filter

Maximum Recommended Continuous Filter Operating and Surge Temperatures for Needlefelt Fabrics

Filterbagcheck Ltd

Filter House, 32 Water Street,
Worsthorne, Burnley, Lancs
BB10 3NF
Tel/Fax: 01282 423168
Mobile: 07960 034970

E-mail: info@filterbagcheck.com

Degrees C 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270

Polyester
sensitive to moist heat, alkalis

surge 170°

  

Polypropylene

surge 110°

  

Homopolymer Acrylic
sensitive to zinc compounds

surge 150°

  

Polyphenylsulphide
sensitive to oxygen and oxidising agents

surge 190°

  

Polyaramid
sensitive to moist heat, dewpoint excursions, acids

surge 220°

  

Polyimide
sensitive to dewpoint excursions

surge 260°

  

Polytetrafluoroethylene (PTFE)
sensitive to Fluorine and Fluorine compounds

  

Fibreglass
sensitive to HF (Hydrogen Fluoride)