Compound blowout preventer seal and method of using same
US-9441443-B2 · Sep 13, 2016 · US
Valve vented redundant stem seal system
US9010725B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9010725-B2 |
| Application number | US-201113333024-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 21, 2011 |
| Priority date | Dec 21, 2011 |
| Publication date | Apr 21, 2015 |
| Grant date | Apr 21, 2015 |
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- Title
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Abstract
Official abstract text for this publication.
A valve includes a stem seal assembly that prevent fluid flow in a first direction and vents in a second direction opposite the first direction. The assembly includes a packing assembly positioned within a valve stem opening of a valve body of the valve to seal a valve stem to the valve body. The packing assembly includes a first seal and a second seal preventing passage of fluid from a body cavity of the valve body to an exterior of the valve body along the valve stem while venting fluid from an exterior of the valve body to the body cavity along the valve stem. The packing assembly isolates the first seal and the second seal so that a load applied to the first seal ring is not transferred to the second seal ring.
First claim
Opening claim text (preview).
What is claimed is: 1. A valve having a stem seal assembly comprising: a valve body defining a flow passage and a body cavity perpendicular to the flow passage; the valve body further defining a stem opening extending from an exterior of the body into the body cavity; a valve member moveable between an open position and a closed position, the valve member blocking the flow passage in the closed position, and allowing flow through the flow passage in the open position; a valv…
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Classifications
Mechanical Engineering · mapped topic
- F16K3/0227Primary
Mechanical Engineering · mapped topic
- F16K39/04Primary
Mechanical Engineering · mapped topic
- F16J15/3212Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9010725B2 cover?
- A valve includes a stem seal assembly that prevent fluid flow in a first direction and vents in a second direction opposite the first direction. The assembly includes a packing assembly positioned within a valve stem opening of a valve body of the valve to seal a valve stem to the valve body. The packing assembly includes a first seal and a second seal preventing passage of fluid from a body ca…
- Who is the assignee on this patent?
- Hunter Rick C, Vetco Gray Inc
- What technology area does this patent fall under?
- Primary CPC classification F16K3/0227. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 21 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).