Patent · US Active

Ball valve

US9593779B2 · kind B2 · utility

3Cited by

6References

13Claims

0Family size

Assignee

FJELL SUBSEA PRODUCTS AS · NO

Inventors

Asbjørn Strand · Jessheim, NO
Kristian Karlsen · Stanghelle, NO

Key dates

Filing date	May 15, 2015
Grant date	Mar 14, 2017
Priority date	—
Expiry date	May 15, 2035

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49426
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Disclosed herein is a bellow for use in a ball valve, the bellow comprising: a metallic seat at an end of the bellow for providing a contact surface with a ball of a ball valve; and a metallic body 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. Advantageously, embodiments allow a new design of ball valve that maintains a high standard of performance in subsea environments over long time periods.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.