Filter tubes made of needled felt
The needled felt filter tubes are mainly made of synthetic fibre. The standard of a filter tube depends largely on the kind of the filter fibres. Special designed materials can stand very high running temperatures and are resistant against agressive chemicals.
Qualities and durability of a filter tube depends on composition, structure, surface treatment and the thickness of the material. Because of many years of practical experience in filter technology, FAV is your partner to check out the perfect combination of materials for your individual solution.
Application under following conditions
|no||yes||yes||220°C||not hydrolysis resistant,low acid restistant, highly restistant against alkaline|
|yes||no||yes||125°C||resistant against acid and hydrolsis satisfactory resistant, against alkaline|
|Polyester||yes||no||yes||150°C||best proved because of the quality of polyester fibre , but not hydrolysis resistant moderate resistant against alkaline|
|yes||yes||no||95°C||very high mechanical stability acid and alkaline resistant|
|Polyimide (P84)||yes||no||yes||260°C||hydrolysis resistance depends on special conditions|
|yes||yes||yes||260°C||resistant against nearly all chemical agents|
|Fibre Glass||yes||yes||yes||260°C||nonresistant against hydroflouric acid, good chemical resistance|