Ball valve

A bellow 102 for use in a ball valve 101 has a metallic seat, fig 5 at an end of the bellow 102 for providing a contact surface with a ball of a ball valve 101; and a metallic body, fig 5 integral with the seat; wherein the metallic body has a longitudinally elastic property such that, when the bell...

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Bibliographic Details
Main Authors ASBJøRN STRAND, KRISTIAN KARLSEN
Format Patent
LanguageEnglish
Published 18.11.2015
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Summary:A bellow 102 for use in a ball valve 101 has a metallic seat, fig 5 at an end of the bellow 102 for providing a contact surface with a ball of a ball valve 101; and a metallic body, fig 5 integral with the seat; wherein the metallic body has a longitudinally elastic property such that, when the bellow is in use in a ball valve and the bellow is arranged within the housing of the ball valve so that it is always under longitudinal compression, substantially only the compression in the bellow causes the seat to apply a sealing force against the ball of the ball valve that maintains a mechanical seal between the seat and the ball valve. Multiple bellows may be present and a method of manufacturing a ball valve including the bellow is also claimed.
Bibliography:Application Number: GB20150008436