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New PTFE gasket for butterfly valve enhances process reliability

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Publication Form: Fachartikel
Article No.: 30285_2009_SP1_05
Issue: Special 1
Issue Name: New PTFE gasket for butterfly valve enhances process reliability
Publication Date: 30.09.2009
Author: Timo Jäckle/Karl-Heinz Mayer, Wolfgang Paul
Publication House: Vulkan-Verlag GmbH
Pages: 4
Publication Form: PDF
Language: en
Topic: Industriearmaturen


In both in the chemicals processing industry and many other applications, valves very frequently come into contact with highly aggressive fluids. The advantages and disadvantages - or even the problems - of the valve materials used then become apparent very quickly. The safety, reliability and cost-efficiency of the valves used is decided, in particular, in the field of seal and gaskets. Fundamental properties, such as resistance to chemical attack, corrosion and temperature, and also per-meation rates, must be taken into account for all the materials used. These influencing factors become even more vital as temperatures and/or fluid concentrations increase. Mixtures of acids, and also cleaning proc-esses, have again and again proven to be extremely critical.

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