Patent · US Active

Valve stem seal arrangement

US9194511B2 · kind B2 · utility

3Cited by

13References

7Claims

0Family size

Assignee

Aker Subsea AS · NO

Inventors

Nick Newlands · Oslo, NO
Olle Säfvenberg · Piteå, SE
Bengt Dahlborg · Charlottenberg, SE
Øystein Møgedal · Oslo, NO

Key dates

Filing date	May 8, 2012
Grant date	Nov 24, 2015
Priority date	—
Expiry date	Jul 25, 2032

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B34/04
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The invention provides a valve useful as a production valve in or connected to a production tree subsea, and other similar uses subsea or topside, the valve comprises a valve element, a valve element pressure housing, an actuator, a stem and a bonnet, the actuator is via the stem operatively arranged to close or open a fluid passageway through the valve element, the bonnet enclose the stem and is connected to the valve element pressure housing and seals are arranged between the stem and the bonnet for sealing against the pressure of the valve element pressure housing. The valve is distinctive in that the valve comprises at least one seal for sealing between stem and bonnet, the seal having identical inner sealing diameter against the stem and outer sealing against a single body or element of the bonnet.

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